Must be either Fusion Summoned, or Special Summoned by Tributing 1 Level 10 "Rainbow Dragon" or "Rainbow Dark Dragon" you control (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 ATK until the end of this turn. (Quick Effect): You can Tribute this Fusion Summoned card; shuffle all cards on the field into the Deck.
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