Rainbow Overdragon
Level 12 LIGHT/Dragon Fusion Effect4000 ATK / 0 DEF
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.
Ultimate Crystal Magic
Normal TrapWhen your "Crystal Beast" monster is destroyed by battle: You can send 7 "Crystal Beast" cards with different names from your hand, Deck and/or face-up field to the GY; Special Summon 1 "Ultimate Crystal" Fusion Monster from your Extra Deck. (This is treated as a Fusion Summon.) If a face-up "Ultimate Crystal" monster you control leaves the field because of an opponent's card effect: You can banish this card from your GY; place any number of "Crystal Beast" monsters from your GY, face-up in your Spell & Trap Zone as Continuous Spells.
Ultimate Crystal Rainbow Dragon Overdrive
Level 12 LIGHT/Dragon Fusion Effect4000 ATK / 0 DEF
1 "Ultimate Crystal" monster + 7 "Crystal Beast" monsters
Must be Special Summoned (from your Extra Deck) during a Duel you Special Summoned an "Ultimate Crystal" monster, by banishing the above monsters from your field and/or GY. While 7 or more of your "Crystal Beast" monsters with different names are banished, this card gains 7000 ATK. If this card has not battled this turn (Quick Effect): You can Tribute this card; shuffle as many cards on the field as possible into the Deck, and if you do, Special Summon any number of your banished "Crystal Beast" monsters.