Mermail Abyssalacia
Link 2 WATER/Sea Serpent Link Effect1600 ATK
2 Fish, Sea Serpent, and/or Aqua monsters
Monsters this card points to gain 500 ATK/DEF. You can only use each of the following effects of "Mermail Abyssalacia" once per turn.
● During your opponent's turn (Quick Effect): You can send 1 card from your hand to the GY; add 1 "Mermail" monster from your Deck to your hand.
● If this card in its owner's possession is destroyed by an opponent's attack or card effect: You can send 1 WATER monster from your Deck to the GY, then target 1 WATER monster in your GY; Special Summon it in Defense Position.
Mermail Abyssbalaen
Level 7 WATER/Aqua Effect2500 ATK / 2000 DEF
You can discard 4 other "Mermail" monsters to the Graveyard; Special Summon this card from your hand. When you do: Target cards your opponent controls, up to the number of "Mermail" monsters in your Graveyard (if possible); this card gains 500 ATK, and if it does, destroy those targets (if any). You can Tribute 1 other face-up Attack Position "Mermail" monster; this card gains the following effect this turn.
● At the start of the Damage Step, if this card battles a Defense Position monster: Destroy that monster.
Mermail Abyssdine
Level 3 WATER/Aqua Effect1000 ATK / 200 DEF
When this card is added from your Deck or Graveyard to your hand by a card effect: You can Special Summon this card from your hand. You must control a "Mermail" monster to activate and to resolve this effect. When this card is Special Summoned by the effect of a "Mermail" monster: You can target 1 Level 3 or lower "Mermail" monster in your Graveyard; Special Summon that target. You can only use 1 "Mermail Abyssdine" effect per turn, and only once that turn.
Mermail Abyssgaios
Level 7 WATER/Aqua Xyz Effect2800 ATK / 1600 DEF
2 Level 7 WATER monsters
While this face-up card has Xyz Material, Level 5 or higher monsters cannot attack. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card; negate the effects of all face-up monsters your opponent currently controls that have less ATK than this card, until the end of the turn.
Mermail Abyssgunde
Level 3 WATER/Aqua Effect1400 ATK / 800 DEF
If this card is discarded to the Graveyard: You can target 1 "Mermail" monster in your Graveyard, except "Mermail Abyssgunde"; Special Summon that target. You can only use the effect of "Mermail Abyssgunde" once per turn.
Mermail Abysshilde
Level 3 WATER/Aqua Effect1300 ATK / 400 DEF
If this card is sent to the Graveyard: You can Special Summon 1 "Mermail" monster from your hand, except "Mermail Abysshilde". You can only use the effect of "Mermail Abysshilde" once per turn.
Mermail Abyssleed
Level 7 WATER/Sea Serpent Effect2700 ATK / 1000 DEF
You can discard 3 other WATER monsters to the GY; Special Summon this card from your hand. When Summoned this way: You can target 1 "Abyss-" Spell/Trap in your GY; add that target to your hand. You can Tribute 1 other Attack Position "Mermail" monster; send 1 random card from your opponent's hand to the GY. You can only use this effect of "Mermail Abyssleed" once per turn.
Mermail Abysslinde
Level 3 WATER/Aqua Effect1500 ATK / 1200 DEF
If this card on the field is destroyed and sent to the Graveyard: You can Special Summon 1 "Mermail" monster from your Deck, except "Mermail Abysslinde". You can only use the effect of "Mermail Abysslinde" once per turn.
Mermail Abysslung
Level 4 WATER/Fish Effect1200 ATK / 1800 DEF
Your opponent cannot target face-up WATER monsters for attacks, except this one. All WATER monsters you control gain 300 ATK.
Mermail Abyssmander
Level 4 WATER/Fish Effect100 ATK / 2000 DEF
You can banish this card from your Graveyard to activate 1 of these effects;
● Increase the Levels of all "Mermail" monsters you currently control by 1.
● Increase the Levels of all "Mermail" monsters you currently control by 2.
Mermail Abyssmegalo
Level 7 WATER/Sea Serpent Effect2400 ATK / 1900 DEF
You can discard 2 other WATER monsters to the GY; Special Summon this card from your hand. When Summoned this way: You can add 1 "Abyss-" Spell/Trap from your Deck to your hand. You can Tribute 1 other Attack Position WATER monster; this card can make a second attack during each Battle Phase this turn.
Mermail Abyssnerei
Level 3 WATER/Aqua Effect1200 ATK / 2000 DEF
(Quick Effect): You can discard this card, then target 1 WATER monster you control; destroy 1 other WATER monster in your hand or field, and if you do, the targeted monster gains ATK/DEF equal to the destroyed monster's original ATK/DEF, until the end of this turn. If this card is sent from the field to the GY: You can draw 1 card, then discard 1 card. You can only use each effect of "Mermail Abyssnerei" once per turn.
Mermail Abyssnose
Level 4 WATER/Fish Effect1500 ATK / 1500 DEF
When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can discard 1 WATER monster to the Graveyard; Special Summon 1 "Mermail" monster from your Deck in face-up Defense Position. You can only use the effect of "Mermail Abyssnose" once per turn.
Mermail Abyssocea
Level 3 WATER/Aqua Effect1100 ATK / 1900 DEF
You can target 1 "Mermail" monster you control; Special Summon any number of Level 4 or lower "Mermail" monsters from your Deck whose combined Levels are less than or equal to the Level of that monster, then send that monster to the Graveyard. You can only use the effect of "Mermail Abyssocea" once per turn.
Mermail Abysspike
Level 4 WATER/Fish Effect1600 ATK / 800 DEF
When this card is Normal or Special Summoned: You can discard 1 WATER monster to the Graveyard; add 1 Level 3 WATER monster from your Deck to your hand. You can only use this effect of "Mermail Abysspike" once per turn.
Mermail Abyssteus
Level 7 WATER/Aqua Effect1700 ATK / 2400 DEF
You can discard 1 other WATER monster to the GY; Special Summon this card from your hand. When Summoned this way: You can add 1 Level 4 or lower "Mermail" monster from your Deck to your hand. You can only use this effect of "Mermail Abyssteus" once per turn.
Mermail Abysstrite
Level 3 WATER/Sea Serpent Xyz Effect1600 ATK / 2800 DEF
3 Level 3 monsters
During either player's turn, when your opponent targets exactly 1 face-up "Mermail" monster you control for an attack, or with a Spell/Trap effect that could have targeted this card (except during the Damage Step): You can detach 1 Xyz Material from this card; that attack/effect now targets this card. When this card is destroyed and sent to the Graveyard: You can target 1 "Mermail" monster in your Graveyard, except "Mermail Abysstrite"; Special Summon that target.
Mermail Abyssturge
Level 4 WATER/Fish Effect1700 ATK / 1100 DEF
When this card is Normal or Special Summoned: You can discard 1 WATER monster to the Graveyard, then target 1 Level 3 or lower WATER monster in your Graveyard; add that target to your hand. You can only use the effect of "Mermail Abyssturge" once per turn.
Mermail King - Neptabyss
Link 3 WATER/Sea Serpent Link Effect2300 ATK
2+ monsters, including a Fish, Sea Serpent, or Aqua monster
Your opponent cannot target WATER monsters this card points to with card effects. You can only use each of the following effects of "Mermail King - Neptabyss" once per turn. If a WATER monster(s) is sent to the GY to activate a card or effect (except during the Damage Step): You can take 1 "Abyss-" Equip Spell from your Deck or GY and either add it to your hand or equip it to this card. If this card in its owner's possession is destroyed by an opponent's card: You can add 1 "Atlantean" or "Mermail" monster from your Deck to your hand.
Mermail Shadow Squad
Level 3 WATER/Sea Serpent Effect0 ATK / 1900 DEF
(This card is always treated as an "Atlantean" card.)
You can discard 1 card to the GY; WATER monsters you currently control become Level 7 until the end of this turn. If this card is sent to the GY to activate a WATER monster's effect: Special Summon 1 Level 4 or lower "Atlantean" or "Mermail" monster from your Deck, except "Mermail Shadow Squad", also you cannot Special Summon from the Extra Deck for the rest of this turn, except WATER monsters. You can only use each effect of "Mermail Shadow Squad" once per turn.