Rainbow Dark Dragon

(This card is always treated as an "Ultimate Crystal" card.)
Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by banishing 7 DARK monsters with different names from your GY. You can banish all other DARK monsters from your field and GY; this card gains 500 ATK for each card banished this way.

Rainbow Dragon

(This card is always treated as an "Ultimate Crystal" card.)
Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by having 7 "Crystal Beast" cards with different names on your field and/or GY. This card cannot activate the following effects the turn it is Special Summoned. (Quick Effect): You can send all face-up "Crystal Beast" monsters you control to the GY; this card gains 1000 ATK for each monster sent to the GY. You can banish all "Crystal Beast" monsters from your GY; shuffle all cards on the field into the Deck.

Rainbow Neos

"Elemental HERO Neos" + 1 "Ultimate Crystal" monster
Must be Fusion Summoned with the above Fusion Material Monsters and cannot be Special Summoned by other ways. Once per turn: You can activate 1 of these effects. ● Send 1 monster you control to the Graveyard; shuffle all monsters your opponent controls into the Deck. ● Send 1 Spell/Trap Card you control to the Graveyard; shuffle all Spell and Trap Cards your opponent controls into the Deck. ● Send 1 card from the top of your Deck to the Graveyard; shuffle all cards in your opponent's Graveyard into the Deck.

Rainbow Overdragon

7 "Crystal Beast" monsters
(This card is always treated as an "Ultimate Crystal" card.)
Must be either Fusion Summoned, or Special Summoned by Tributing 1 Level 10 "Ultimate Crystal" monster (in which case you do not use "Polymerization"). Once per turn: You can banish 1 "Crystal Beast" monster from your GY; this card gains ATK equal to the banished monster's, until the end of this turn. (Quick Effect): You can Tribute this Fusion Summoned card; shuffle all cards on the field into the Deck.

Raiza the Mega Monarch

You can Tribute Summon this card by Tributing 1 Tribute Summoned monster. If this card is Tribute Summoned: Target 1 card on the field and 1 card in either player's Graveyard, also if this card was Tribute Summoned by Tributing a WIND monster, you can target an additional card on the field; place the first target(s) on the top of the Deck in any order, also, after that, return the additional target (if any) to the hand.

Raiza the Storm Monarch

If this card is Tribute Summoned: Target 1 card on the field; place that target on the top of the Deck.

RAM Clouder

You can Tribute 1 monster, then target 1 Cyberse monster in your GY; Special Summon it. You can only use this effect of "RAM Clouder" once per turn.

Rampaging Smashtank Rhynosaber

1 Tuner + 1+ non-Tuner monsters
You can discard any number of cards; this card gains 700 ATK for each card discarded. At the end of the Battle Phase, if this card battled: You can send this card to the GY; Special Summon monsters from your GY whose total Levels equal 7, except "Rampaging Smashtank Rhynosaber", but their effects are negated. You can only use each effect of "Rampaging Smashtank Rhynosaber" once per turn.

Ranryu

You can only control 1 "Ranryu". If you control a Spellcaster monster, you can Special Summon this card (from your hand). If this card is destroyed by battle or card effect and sent to the GY: You can target 1 monster with 1500 ATK/200 DEF in your GY, except "Ranryu"; Special Summon it.

Rapid Warrior

During your Main Phase 1, you can activate this card's effect. If you do, it can attack your opponent directly this turn. Other monsters cannot attack during the turn you activate this effect.

Rapid-Fire Magician

Inflict 400 damage to your opponent each time you activate a Normal Spell Card.

Rare Fish

"Fusionist" + "Enchanting Mermaid"

Rare Metal Dragon

This card cannot be Normal Summoned or Set.

Razor Lizard

While you control another Reptile-Type monster, if this card attacks a face-down Defense Position monster, destroy the monster immediately with this card's effect without flipping it face-up or applying damage calculation.

Rciela, Sinister Soul of the White Forest

1 Tuner + 1+ non-Tuner monsters
If this card is Special Summoned: You can send 1 Spell/Trap from your hand or field to the GY; add 1 "White Forest" card or 1 LIGHT Spellcaster monster from your Deck to your hand. You can only use this effect of "Rciela, Sinister Soul of the White Forest" once per turn. Illusion and Spellcaster Synchro Monsters you control gain 500 ATK, also they cannot be destroyed by your opponent's card effects.

Re-Cover

If this card is in the Graveyard and your opponent has 5 or more cards in their Extra Deck than you do: You can pay 2000 LP; Special Summon this card, but banish it when it leaves the field. You can only use this effect of "Re-Cover" once per turn.

Re: EX

If this card battles a monster in the Extra Monster Zone, it gains 800 ATK and DEF during the Damage Step only.

Reactan, Dragon Ruler of Pebbles

You can discard this card AND 1 Dragon-Type or EARTH monster; Special Summon 1 "Redox, Dragon Ruler of Boulders" from your Deck. It cannot attack this turn. You can only use the effect of "Reactan, Dragon Ruler of Pebbles" once per turn.

Reaper of Prophecy

When this card is Normal or Special Summoned: You can activate this effect; apply as many effects as possible, based on the number of "Spellbook" Spell Cards with different names in your Graveyard. You can only use the effect of "Reaper of Prophecy" once per turn.
● 3 or more: This card gains 600 ATK.
● 4 or more: Add 1 "Spellbook" Spell Card from your Deck to your hand.
● 5 or more: Special Summon 1 Level 5 or higher DARK Spellcaster-Type monster from your Deck.

Reaper on the Nightmare

"Spirit Reaper" + "Nightmare Horse"
This card is not destroyed as a result of battle. Destroy this card when it is targeted by the effect of a Spell, Trap, or Effect Monster. This card can attack your opponent's Life Points directly even if there is a monster on your opponent's side of the field. If this card successfully attacks your opponent's Life Points directly, your opponent discards 1 card randomly from his/her hand.

Reborn Tengu

If this face-up card leaves the field: Special Summon 1 "Reborn Tengu" from your Deck.

Rebuildeer

When this card destroys an opponent's monster by battle: You can target 1 Cyberse monster with 1500 or less ATK in your GY; Special Summon it.

Recon, Scout Fur Hire

During your Main Phase: You can Special Summon 1 monster "Fur Hire" from your hand, except "Recon, Scout Fur Hire". If a monster "Fur Hire" is Special Summoned to your field while you control this monster (except during the Damage Step): You can target 1 Set card on the field; destroy it. You can only use each effect of "Recon, Scout Fur Hire" once per turn.

Red Dragon Archfiend

1 Tuner + 1 or more non-Tuner monsters
After damage calculation, if this card attacks a Defense Position monster your opponent controls: Destroy all Defense Position monsters your opponent controls. During your End Phase: Destroy all other monsters you control that did not declare an attack this turn. This card must be face-up on the field to activate and to resolve this effect.

Red Dragon Archfiend/Assault Mode

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except with "Assault Mode Activate". If this card attacks, destroy all other monsters after damage calculation. When this card on the field is destroyed, you can Special Summon 1 "Red Dragon Archfiend" from your Graveyard.

Red Dragon Ninja

When this card is Summoned: You can banish 1 "Ninja" or "Ninjitsu Art" card from your GY, then target 1 Set card your opponent controls; reveal that Set card, then return it to either the top or bottom of the Deck. Your opponent cannot activate the targeted card in response to this effect's activation. You can only use this effect of "Red Dragon Ninja" once per turn.

Red Familiar

You can Tribute 1 Fiend monster, then target 1 DARK Dragon Synchro Monster in your GY; Special Summon it in Defense Position, but negate its effects. You can banish this card from your GY, then target 1 DARK Dragon Synchro Monster you control and declare a Level from 1 to 8; that monster becomes that Level until the end of this turn. You can only use each effect of "Red Familiar" once per turn.

Red Hared Hasty Horse

If there is a column with no cards, you can Special Summon this card (from your hand) in Attack Position to your zone in that column. You can only Special Summon "Red Hared Hasty Horse" once per turn this way. If another card is placed in this card's column: Destroy this card. Once per turn: You can halve this card's original ATK for the rest of this turn, and if you do, it can attack directly this turn.

Red Hypernova Dragon

4 Tuners + 1+ non-Tuner Synchro Monsters
Must first be Synchro Summoned with the above materials. Gains 500 ATK for each Tuner in your GY. Your opponent cannot target this card with card effects, also it cannot be destroyed by your opponent's card effects. Once per turn (Quick Effect): You can banish this card, also banish as many cards in your opponent's field and GY as possible, then you can Special Summon 1 "Red Nova Dragon" from your Extra Deck (this is treated as a Synchro Summon).

Red Lotus King, Flame Crime

During the Main Phase, if you control a Fiend Tuner, or your opponent controls a Special Summoned monster (Quick Effect): You can Special Summon this card from your hand. If this card is Special Summoned: You can inflict 400 damage to your opponent for each FIRE monster you control with different names. If this card is sent to the GY as Synchro Material: You can send 1 Normal Trap from your Deck to the GY. You can only use each effect of "Red Lotus King, Flame Crime" once per turn.

Red Nova Dragon

2 Tuners + "Red Dragon Archfiend"
This card gains 500 ATK for each Tuner monster in your Graveyard. Cannot be destroyed by an opponent's card effects. When an opponent's monster declares an attack: You can target the attacking monster; banish this card, and if you do, negate that attack. During the next End Phase: Special Summon this card banished by this effect.

Red Nova Dragon - Burning Soul

2 Tuners + 1 non-Tuner
Must be either Synchro Summoned, or Special Summoned (from your Extra Deck) by banishing 2 Tuners and 1 "Red Dragon Archfiend" from your GY. If this card is Special Summoned: You can add 1 card from your GY to your hand, and if you do, this card gains 2000 ATK. You can only use this effect of "Red Nova Dragon - Burning Soul" once per Duel, and only during a Duel you Synchro Summoned "Red Dragon Archfiend". Cannot be destroyed by card effects.

Red Nova Dragon/Assault Mode

Cannot be Normal Summoned/Set. Must be Special Summoned with "Assault Mode Activate". When your opponent activates a card or effect (Quick Effect): You can banish this card you control until the End Phase; banish cards your opponent controls up to the number of Tuners in your GY. When an opponent's monster declares an attack: You can banish this card you control until the End Phase; negate the attack, then end the Battle Phase. If this card is destroyed: You can Special Summon 1 "Red Nova Dragon" from your GY.

Red Ogre

When this card is Normal Summoned: You can send any number of cards from your hand to the Graveyard, then target the same number of cards on the field; return those targets to the hand.

Red Resonator

When this card is Normal Summoned: You can Special Summon 1 Level 4 or lower monster from your hand. When this card is Special Summoned: You can target 1 face-up monster on the field; gain LP equal to its ATK. You can only use this effect of "Red Resonator" once per turn.

Red Rising Dragon

1 Fiend Tuner + 1+ non-Tuner monsters
When this card is Synchro Summoned: You can target 1 "Resonator" monster in your GY; Special Summon it. You cannot Special Summon monsters from the Extra Deck the turn you activate this effect, except DARK Dragon Synchro Monsters. During your Main Phase, except the turn this card was sent to the GY: You can banish this card from your GY, then target 2 Level 1 "Resonator" monsters in your GY; Special Summon both.

Red Sparrow Summoner

When this card you control is destroyed by battle with an opponent's attacking monster and sent to your Graveyard: You can Special Summon 1 Warrior-Type monster with 1500 or less ATK from your Deck in Attack Position.

Red Sprinter

When this card is Normal or Special Summoned while you control no other monsters: You can Special Summon 1 Level 3 or lower Fiend-Type Tuner from your hand or Graveyard. You can only use this effect of "Red Sprinter" once per turn.

Red Supernova Dragon

3 Tuners + 1+ non-Tuner Synchro Monsters
Must first be Synchro Summoned. Gains 500 ATK for each Tuner in your GY. Cannot be destroyed by your opponent's card effects. Once per turn, when your opponent's monster effect is activated, or when an opponent's monster declares an attack (Quick Effect): You can activate this effect; banish this card, also banish all cards your opponent controls. Once per turn, during your next End Phase after this card was banished by its own effect: Special Summon this banished card.

Red Wyvern

1 Tuner + 1 or more non-Tuner monsters
During either player's turn, if a monster with higher ATK than this Synchro Summoned card is on the field: You can destroy the 1 face-up monster on the field that has the highest ATK (your choice, if tied). This effect can only be used once while this card is face-up on the field.

Red-Eyes Alternative Black Dragon

Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by Tributing 1 "Red-Eyes" monster from your hand or field. You can only Special Summon "Red-Eyes Alternative Black Dragon" once per turn this way. If this card is destroyed by battle, or if this card in its owner's possession is destroyed by an opponent's card effect: You can target 1 Level 7 or lower "Red-Eyes" monster in your GY, except "Red-Eyes Alternative Black Dragon"; Special Summon it, and if it was a "Red-Eyes B. Dragon" that was Special Summoned, its original ATK becomes doubled.

Red-Eyes Archfiend of Lightning

This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● Once per turn: You can destroy all face-up monsters your opponent controls with DEF lower than this card's ATK.

Red-Eyes Baby Dragon

When this card is destroyed by battle and sent to the GY: You can Special Summon 1 Level 7 or lower "Red-Eyes" monster from your Deck, and if you do, equip this card from the GY to it. It gains 300 ATK. If this card is sent to the GY while equipped to a monster: You can add 1 Level 1 Dragon monster from your Deck or GY to your hand.

Red-Eyes Black Dragon

''A ferocious dragon with a deadly attack.''

Red-Eyes Black Dragon Sword

Must be Special Summoned with "The Claw of Hermos", using a Dragon monster. If this card is Special Summoned: Target 1 other face-up monster on the field; equip this card to it. It gains 1000 ATK, and 500 ATK/DEF for each Dragon monster on the field and in the GYs.

Red-Eyes Black Flare Dragon

This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● If damage calculation is performed involving this card, at the end of the Battle Phase: You can inflict damage to your opponent equal to this card's original ATK. You can only use this effect of "Red-Eyes Black Flare Dragon" once per turn.

Red-Eyes Black Fullmetal Dragon 33

Cannot be Normal Summoned/Set. Must first be Special Summoned with "Max Metalmorph" that was activated by Tributing a Level 5 or higher Dragon monster. You can reveal this card in your hand; Set 1 "Metalmorph" Trap from your Deck, and if you do, shuffle this card into the Deck. When your opponent activates a card or effect (Quick Effect): You can negate the activation, then you can inflict damage to your opponent equal to the original ATK of 1 Attack Position monster your opponent controls. You can only use each effect of "Red-Eyes Black Fullmetal Dragon" once per turn.

Red-Eyes Black Metal Dragon

Cannot be Normal Summoned/Set. Must first be Special Summoned (from your Deck) by Tributing "Red-Eyes B. Dragon" equipped with "Metalmorph".

Red-Eyes Dark Dragoon 100

"Dark Magician" + "Red-Eyes Black Dragon" or 1 Dragon Effect Monster
Cannot be destroyed by card effects. Neither player can target this card with card effects. During your Main Phase: You can destroy 1 monster your opponent controls, and if you do, inflict damage to your opponent equal to that monster's original ATK. You can use this effect a number of times per turn up to the number of Normal Monsters used as Fusion Material for this card. Once per turn, when a card or effect is activated (Quick Effect): You can discard 1 card; negate the activation, and if you do, destroy that card, and if you do that, this card gains 1000 ATK.

Red-Eyes Darkness Dragon

Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by Tributing 1 "Red-Eyes B. Dragon" and cannot be Special Summoned by other ways. This card gains 300 ATK for each Dragon-Type monster in your Graveyard.

Red-Eyes Darkness Metal Dragon

You can Special Summon this card (from your hand) by banishing 1 face-up Dragon monster you control. You can only Special Summon "Red-Eyes Darkness Metal Dragon" once per turn this way. During your Main Phase: You can Special Summon 1 Dragon monster from your hand or GY, except "Red-Eyes Darkness Metal Dragon". You can only use this effect of "Red-Eyes Darkness Metal Dragon" once per turn.

Red-Eyes Flare Metal Dragon 1

2 Level 7 monsters
Cannot be destroyed by card effects while it has Xyz Material. While this card has Xyz Material, each time your opponent activates a card or effect, inflict 500 damage to your opponent immediately after it resolves. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card, then target 1 "Red-Eyes" Normal Monster in your Graveyard; Special Summon it.

Red-Eyes Metal Claws Dragon

You can activate "Metalmorph" Traps the turn they were Set. You can only use each of the following effects of "Red-Eyes Metal Claws Dragon" once per turn. You can send 1 face-down card you control to the GY; Special Summon this card from your hand. If this card is Normal or Special Summoned, and you have "Max Metalmorph" in your field or GY: You can add 1 "Metalmorph" Trap from your Deck or GY to your hand.

Red-Eyes Retro Dragon

If a Level 7 or lower "Red-Eyes" monster(s) you control is destroyed by your opponent's attack or card effect and sent to your GY, while this card is in your hand: You can Special Summon this card in Defense Position, and if you do, Special Summon as many of those destroyed monsters as possible in the same position they were in when destroyed. You can Tribute this card; you can Normal Summon 1 "Red-Eyes" monster during your Main Phase this turn in addition to your Normal Summon/Set. (You can only gain this effect once per turn.)

Red-Eyes Slash Dragon

"Red-Eyes B. Dragon" + 1 Warrior monster
When a "Red-Eyes" monster declares an attack: You can target 1 Warrior monster in your GY; equip it to this card as an Equip Spell with this effect. ● The equipped monster gains 200 ATK.
When a card or effect is activated that targets a card you control (Quick Effect): You can send 1 Equip Card you control to the GY; negate the activation, and if you do, destroy that card. If this card is destroyed by battle or card effect: You can Special Summon as many monsters from your GY as possible, that were equipped to this card.

Red-Eyes Toon Dragon

Cannot attack the turn it is Summoned. While you control "Toon World" and your opponent controls no Toon monsters, this card can attack your opponent directly. Once per turn: You can Special Summon 1 Toon monster from your hand, except "Red-Eyes Toon Dragon", ignoring its Summoning conditions.

Red-Eyes Wyvern

During your End Phase, if you did not Normal Summon/Set a monster this turn: You can banish this card from your Graveyard; Special Summon 1 "Red-Eyes" monster from your Graveyard, except "Red-Eyes B. Chick".

Red-Eyes Zombie Dragon

You can Tribute Summon this card in Attack Position by Tributing 1 Zombie monster. When this card destroys a Zombie monster by battle and sends it to the GY: You can Special Summon that Zombie monster.

Red-Eyes Zombie Dragon Lord

1 Zombie Tuner + 1+ non-Tuner monsters
During your opponent's turn (Quick Effect): You can target 1 Zombie monster in your GY, except "Red-Eyes Zombie Dragon Lord"; Special Summon it. If this card is in your GY: You can banish 1 Zombie monster you control; Special Summon this card. You can only use each effect of "Red-Eyes Zombie Dragon Lord" once per turn.

Red-Eyes Zombie Necro Dragon

1 Tuner + 1+ non-Tuner monsters
Gains 100 ATK/DEF for each Zombie monster on the field and in the GYs. When another Zombie monster is destroyed by battle: You can Special Summon 1 Zombie monster from either GY to your field. You can only use this effect of "Red-Eyes Zombie Necro Dragon" once per turn.

Red-Headed Oni

When this card is Special Summoned from the Graveyard by the effect of a Zombie-Type monster: You can target 1 face-up Zombie-Type monster you control; detach 1 Xyz Material from a monster on the field, and if you do, increase the targeted monster's Level by 1 and its ATK by 300 (even if the targeting conditions are no longer correct).

Reeshaddoll Wendi

FLIP: You can Special Summon 1 "Shaddoll" monster from your Deck in face-up or face-down Defense Position, except "Reeshaddoll Wendi".
If this card is sent to the GY by a card effect: You can Special Summon 1 "Shaddoll" monster from your Deck in face-down Defense Position, except "Reeshaddoll Wendi". You can only use 1 "Reeshaddoll Wendi" effect per turn, and only once that turn.

Reeze, Whirlwind of Gusto

Once per turn: You can return 1 card from your hand to the bottom of the Deck to target 1 monster your opponent controls and 1 face-up "Gusto" monster you control; switch control of both monsters.

Reflect Bounder

Before damage calculation, if this card is being attacked by an opponent's monster, and was in face-up Attack Position at the start of the Damage Step: Inflict damage to your opponent equal to the attacking monster's ATK. If you do, after damage calculation: Destroy this card.

Refrain the Melodious Songstress

[ Pendulum Effect ]
You can target 1 "Melodious" Fusion Monster you control; send 1 "Melodious" monster from your Deck to the GY, and if you do, the targeted monster gains ATK equal to the Level of that monster sent to the GY x 200 until the end of this turn. You can only use this effect of "Refrain the Melodious Songstress" once per turn.

If this card is Normal or Special Summoned: You can add 1 "Melodious" monster from your Deck to your hand, except "Refrain the Melodious Songstress". If a "Melodious" Fusion Monster(s) is Special Summoned to your field, while this card is face-up in your Extra Deck (except during the Damage Step): You can place this card in your Pendulum Zone. You can only use each effect of "Refrain the Melodious Songstress" once per turn.

Regenerating Mummy

When this card is sent from your hand to your Graveyard by an opponent's card effect: Return this card to the hand.

Regulus

Once per turn, you can select 1 Field Spell Card in your Graveyard. Return it to the Deck.

Regulus the Fairy Beast

If this card is Normal or Special Summoned: You can add 1 Spell/Trap that mentions "Ancient Fairy Dragon" from your Deck to your hand. During your Main Phase: You can Special Summon 1 Level 4 or lower LIGHT monster (Beast, Plant, or Fairy) from your hand in Defense Position. You can banish this card from your GY, then target 1 Field Spell in your GY; place it on the bottom of the Deck, then draw 1 card. You can only use each effect of "Regulus the Fairy Beast" once per turn.

Regulus, the Prince of Endymion

The first time this card would be destroyed by battle each turn, it is not destroyed. You can only use each of the following effects of "Regulus, the Prince of Endymion" once per turn. If this card is in your hand: You can reveal 1 other Spellcaster monster in your hand; you lose LP equal to the revealed monster's Level x 300, and if you do, Special Summon this card. If this card is Special Summoned: You can add 1 Spell that mentions "Regulus, the Prince of Endymion" from your Deck to your hand.

Reign-Beaux, Overking of Dark World

You can Special Summon this card (from your GY) by returning 1 Level 7 or lower "Dark World" monster you control to the hand. If this card is discarded to the GY by card effect: You can add 1 Level 5 or higher "Dark World" monster from your Deck to your hand, except "Reign-Beaux, Overking of Dark World", then, if this card was discarded from your hand to your GY by an opponent's card effect, you can Special Summon 1 Level 4 or lower "Dark World" monster from your Deck or GY to either field.

Reign-Beaux, Overlord of Dark World

If this card is discarded from your hand to your Graveyard by an opponent's card effect: Special Summon this card from the Graveyard. When this card is Special Summoned this way: Destroy all monsters your opponent controls OR all Spell/Trap Cards they control.

Reinforced Human Psychic Borg

Up to twice per turn, you can remove from play 1 Psychic-Type monster from your Graveyard to have this card gain 500 ATK.

Relinkuriboh

If this card is Tributed: Draw 1 card. If your monster would be destroyed by battle, you can banish this card from your GY instead.

Reptilianne Coatl

If you control a DARK Reptile monster: You can Special Summon this card from your hand, then, if your opponent controls any monsters with 0 ATK, you can Special Summon up to an equal number of "Reptilianne" monsters from your hand. You can only use this effect of "Reptilianne Coatl" once per turn. If this card you control would be used as Synchro Material for a Reptile monster, you can treat it as a non-Tuner.

Reptilianne Hydra

1 "Reptilianne" Tuner + 1 or more non-Tuner monsters
When this card is Synchro Summoned, destroy all face-up monsters with 0 ATK that your opponent controls, and draw 1 card for each monster destroyed.

Reptilianne Medusa

Send 1 card from your hand to the Graveyard and select 1 face-up monster your opponent controls. The ATK of the selected monster becomes 0, and it cannot change its battle position.

Reptilianne Nyami

During the Main Phase, if you have a Reptile monster in your GY (Quick Effect): You can send this card from your hand to the GY, then target 1 face-up monster your opponent controls; change its ATK to 0. If your opponent controls a monster with 0 ATK: You can Special Summon this card from your GY. You can only use 1 "Reptilianne Nyami" effect per turn, and only once that turn.

Reptilianne Scylla

If this card destroys a monster with 0 ATK by battle, you can Special Summon that monster from the Graveyard to your side of the field in face-up Defense Position. The effect(s) of that monster is negated.

Reptilianne Vaskii

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by Tributing 2 face-up monsters with 0 ATK from anywhere on the field. Once per turn, you can select and destroy 1 face-up monster your opponent controls. There can only be 1 face-up "Reptilianne Vaskii" on the field.

Rescue Cat

You can send this card to the GY; Special Summon 2 Level 3 or lower Beast monsters from your Deck, but their effects are negated, also they are destroyed during the End Phase. You can only use this effect of "Rescue Cat" once per turn.

Rescue Ferret

You can shuffle this card you control into the Deck; Special Summon monster(s) from your Deck, except "Rescue Ferret", whose total Levels equal 6, to your zone(s) a Link Monster(s) points to, but those Summoned monsters have their effects negated, also destroy them during the End Phase. You can only use this effect of "Rescue Ferret" once per turn.

Rescue Hamster

[ Pendulum Effect ]
You can banish this card from your Pendulum Zone; add 2 face-up Pendulum Monster Cards with the same name from your Extra Deck to your hand. You can only use this effect of "Rescue Hamster" once per Duel.

If this card was Normal Summoned this turn and you have a face-up Level 5 or lower Pendulum Monster Card in your Extra Deck: You can Tribute this card; choose 1 face-up Level 5 or lower Pendulum Monster Card in your Extra Deck, and Special Summon 2 monsters from your Deck with the same name as that card, but they have their effects negated, also they are destroyed during the End Phase.

Rescue Hedgehog

You can banish this card you control; Special Summon 2 Level 3 or lower monsters from your Deck with the same Type, Attribute, and Level as each other (1 Normal Monster and 1 Effect Monster), but their effects are negated, also destroy them during the End Phase. You can only use this effect of "Rescue Hedgehog" once per turn.

Rescue Rabbit

Cannot be Special Summoned from the Deck. You can banish this face-up card you control; Special Summon 2 Level 4 or lower Normal Monsters with the same name from your Deck, but destroy them during the End Phase. You can only use this effect of "Rescue Rabbit" once per turn.

Reshef the Dark Being

This card can only be Ritual Summoned with the Ritual Spell Card, "Final Ritual of the Ancients". Once per turn, by discarding 1 Spell Card from your hand, take control of 1 monster on your opponent's side of the field until the end of this turn.

ReSolfachord Dreamia

[ Pendulum Effect ]
Pendulum Summons of your "Solfachord" Pendulum Monsters cannot be negated.

While you have an odd Pendulum Scale in your Pendulum Zone, if a "Solfachord" Pendulum Monster Card(s) you control would be destroyed by your opponent's card effect, you can destroy this card instead of 1 of those cards. If you control a "Solfachord" card in your Pendulum Zone: You can Special Summon this card from your hand. You can only use this effect of "ReSolfachord Dreamia" once per turn.

Resonance Insect

If this card is sent from the field to the Graveyard: You can add 1 Level 5 or higher Insect-Type monster from your Deck to your hand. If this card is banished: You can send 1 Insect-Type monster from your Deck to the Graveyard, except "Resonance Insect".

Ret-time Reviver Emit-ter

If this card is in your hand or GY: You can target 1 face-up monster on each field; change them to face-down Defense Position, and if you do, Special Summon this card, but banish it when it leaves the field. You can only use this effect of "Ret-time Reviver Emit-ter" once per turn.

Revealer of the Ice Barrier

While you control another "Ice Barrier" monster, your opponent cannot Tribute Summon. You can only use each of the following effects of "Revealer of the Ice Barrier" once per turn. You can discard 1 card; Special Summon 1 "Ice Barrier" Tuner from your Deck, also you cannot Special Summon monsters for the rest of this turn, except WATER monsters. If you would discard, or send a card(s) from your hand to the GY, to activate an "Ice Barrier" monster's effect, you can banish this card from your GY instead of 1 of those cards.

Revendread Executor

You can Ritual Summon this card with any "Vendread" Ritual Spell. This card's name becomes "Revendread Slayer" while on the field. While this Ritual Summoned card is on the field, your opponent cannot target cards you control with card effects, except this card. If this Ritual Summoned card is destroyed by battle, or is destroyed by an opponent's card effect while in its owner's Monster Zone: You can add 1 "Vendread" card from your Deck to your hand. You can only use this effect of "Revendread Executor" once per turn.

Revendread Slayer

You can Ritual Summon this card with any "Vendread" Ritual Spell. Once per battle, if this card battles an opponent's monster, during damage calculation (Quick Effect): You can banish 1 Zombie monster from your GY; this card gains 300 ATK. If this Ritual Summoned card is sent to the GY: You can add 1 Ritual Spell from your Deck to your hand, and if you do, send 1 "Vendread" monster from your Deck to the GY. You can only use this effect of "Revendread Slayer" once per turn.

Reverse Buster

This card can only attack face-down Defense Position monsters. If this card attacks, your opponent cannot activate any Spell/Trap Cards until the end of the Damage Step. If this card attacked a face-down Defense Position monster, at the start of the Damage Step: You can destroy that face-down monster.

Revival Jam

When this card is destroyed by battle and sent to the Graveyard: You can pay 1000 Life Points; Special Summon it in face-up Defense Position during your next turn's Standby Phase.

Revived King Ha Des

"Plaguespreader Zombie" + 1 or more non-Tuner Zombie-Type monsters
Negate the effects of Effect Monsters destroyed by battle with Zombie-Type monsters you control.

Revolution Cyber Dragon

If you control no monsters, you can Special Summon this card (from your hand). You can only use each of the following effects of "Revolution Cyber Dragon" once per turn. If this card is Special Summoned: You can target 1 face-up monster your opponent controls; negate its effects until the end of this turn. During your Main Phase: You can Fusion Summon 1 Machine Fusion Monster from your Extra Deck, using this card you control and monsters from your hand or field.

Rex, Freight Fur Hire

If this card is Normal or Special Summoned: You can add 1 Spell/Trap "Fur Hire" from your Deck to your hand. During the Main Phase, if you control a monster "Fur Hire" (Quick Effect): You can banish this card from your GY, then target 1 card "Fur Hire" in your GY; either add it to your hand, or Special Summon it if it was a monster. You can only use each effect of "Rex, Freight Fur Hire" once per turn.

Rex, Ride Fur Hire

You can reveal this card in your hand; Special Summon 1 monster "Fur Hire" from your hand, except "Rex, Ride Fur Hire", then Special Summon this card. You can only use this effect of "Rex, Ride Fur Hire" once per turn. If a card(s) is added from the Deck to your opponent's hand, except by a card effect "Fur Hire", and you control another monster "Fur Hire" (except during the Damage Step): You can draw 1 card.

Rhinotaurus

If 2 or more of your opponent's monsters are destroyed by battle with your monsters during the same Battle Phase, this card can make a second attack during that Battle Phase.

Rider of the Storm Winds

You can target 1 Dragon Normal Monster you control; equip this monster from your hand or field to that target. If a monster equipped with this card attacks a Defense Position monster, inflict piercing battle damage to your opponent. If a monster equipped with this card would be destroyed, destroy this card instead.

Right-Hand Shark

When this card is Normal Summoned: You can add 1 "Left-Hand Shark" from your Deck to your hand. If this card is in your GY and you control no monsters: You can Special Summon this card, but banish it when it leaves the field. An Xyz Monster that was Summoned using only WATER monsters as material, including this card on the field, gains this effect.
● This card cannot be destroyed by battle.
You can only use each effect of "Right-Hand Shark" once per turn.

Rigorous Reaver

FLIP: Each player discards 1 card.
If this card is destroyed by battle: The monster that destroyed it loses 500 ATK and DEF.

Rindbrumm the Striking Dragon

"Fallen of Albaz" + 1 Beast, Beast-Warrior, or Winged Beast monster
When a Fusion, Synchro, Xyz, or Link Monster's effect is activated (Quick Effect): You can negate that effect, then you can return 1 monster from the field to the hand. During your opponent's turn, while this card is in your GY (Quick Effect): You can target 1 "Fallen of Albaz" in your GY; Special Summon either that monster or this card, and banish the other. You can only use each effect of "Rindbrumm the Striking Dragon" once per turn.

Ripple Bird

2 Level 1 monsters
You can detach 1 material from this card, then target 1 monster on the field; change its battle position. While all monsters you control are in Attack Position, they gain 500 ATK. While all monsters you control are in Defense Position, your opponent cannot declare an attack.

Ritual Beast Tamer Wen

If this card is Normal Summoned: You can target 1 of your banished "Ritual Beast" monsters; Special Summon it. You can only Special Summon "Ritual Beast Tamer Wen(s)" once per turn.

Ritual Beast Tamer Zefrawendi

[ Pendulum Effect ]
You cannot Pendulum Summon monsters, except "Ritual Beast" and "Zefra" monsters. This effect cannot be negated.

When this card is Normal or Pendulum Summoned: You can add 1 face-up "Zefra" monster from your Extra Deck to your hand, except "Ritual Beast Tamer Zefrawendi". You can only Special Summon "Ritual Beast Tamer Zefrawendi(s)" once per turn.

Ritual Beast Ulti-Apelio

1 "Ritual Beast Tamer" monster + 1 "Spiritual Beast" monster
Must be Special Summoned (from your Extra Deck) by banishing the above cards you control, and cannot be Special Summoned by other ways. (You do not use "Polymerization".) If this card attacks, it is unaffected by other cards' effects until the end of the Damage Step. During either player's turn: You can return this card you control to the Extra Deck, then target 2 of your banished monsters (1 "Ritual Beast Tamer" monster and 1 "Spiritual Beast" monster); Special Summon them in Defense Position.

Ritual Beast Ulti-Gaiapelio

1 "Ritual Beast Ulti" monster + 1 "Ritual Beast Tamer" monster + 1 "Spiritual Beast" monster
Must be Special Summoned (from your Extra Deck) by banishing the above cards you control, and cannot be Special Summoned by other ways. (You do not use "Polymerization".) If Summoned this way, this card gains this effect.
● During either player's turn, when a Spell/Trap Card, or monster effect, is activated: You can banish 1 "Ritual Beast" card from your hand; negate the activation, and if you do, destroy it.

Ritual Beast Ulti-Nochiudrago

1 "Ritual Beast Tamer" monster + 1 "Spiritual Beast" monster
Must be Special Summoned (from your Extra Deck) by banishing the above cards from your field and/or GY. You can only Special Summon "Ritual Beast Ulti-Nochiudrago(s)" once per turn. Your opponent cannot target other "Ritual Beast" monsters you control with card effects. (Quick Effect): You can return this card to the Extra Deck, then target 1 of your banished "Ritual Beast" monsters; Special Summon it, but it cannot attack directly.

Road Synchron

When using this card as Synchro Material for the Synchro Summon of a monster other than "Road Warrior", reduce this card's Level by 2. If this card attacks, at the end of the Damage Step: Increase its Level by 1 until the end of this turn.

Road Warrior

"Road Synchron" + 2 or more non-Tuner monsters
Once per turn: You can Special Summon 1 Level 2 or lower Warrior or Machine-Type monster from your Deck.

Roaring Ocean Snake

"Mystic Lamp" + "Hyosube"

Robot Buster Destruction Sword

You can target 1 "Buster Blader" you control; equip this monster from your hand or your side of the field to that target. While this card is equipped to a monster, Spell/Trap Cards that are already face-up on your opponent's side of the field cannot activate their effects. You can send this Equip Card to the Graveyard; the monster that was equipped with this card gains 1000 ATK until the end of this turn.

Roboyarou

A warrior fully covered with metal. It upgrades by fusing with "Robolady".

Roc from the Valley of Haze

When this card is sent directly from your hand to the Graveyard, add this card to the Deck and shuffle it.

Rock Scales

If this card is Special Summoned: You can target 1 other face-up monster on the field; equip that face-up monster to this card. At the start of the Damage Step, if this card battles an opponent's monster with the same Type and Attribute as the Monster Card equipped by this card's effect: You can destroy that opponent's monster. You can only use each effect of "Rock Scales" once per turn.

Rocket Arrow Express

Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by controlling no cards, and cannot be Special Summoned by other ways. You cannot conduct your Battle Phase the turn you Special Summon this card. You cannot activate cards or effects, or Set any cards. During each of your Standby Phases, destroy this card unless you send your entire hand to the Graveyard (min.1).

Rocket Hermos Cannon

Must be Special Summoned with "The Claw of Hermos", using a Warrior monster. If this card is Special Summoned: Target 1 other face-up monster on the field; equip this card to it. It can make a second attack during each Battle Phase, also, if it attacks a Defense Position monster, inflict piercing battle damage to your opponent.

Rocket Jumper

If the only cards on your opponent's side of the field are Defense Position monsters, this card can attack your opponent's Life Points directly.

Rocket Warrior

During your Battle Phase, this card cannot be destroyed by battle and you take no battle damage from attacks involving this card. If this card attacks a monster, after damage calculation: That attack target loses 500 ATK until the end of this turn.

Rockstone Warrior

You take no Battle Damage from battles involving this card. When this attacking card is destroyed by battle and sent to the Graveyard, Special Summon 2 "Rockstone Tokens" (Rock-Type/EARTH/Level 1/ATK 0/DEF 0). These Tokens cannot be Tributed for a Tribute Summon.