Rainbow Dragon [TAEV-EN006] Secret Rare

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned, except from your hand while you have 7 "Crystal Beast" cards with different names on the field or in your Graveyard. This card cannot activate its effects the turn it Special Summoned. • Send all "Crystal Beast" monsters you control to the Graveyard; This cards gains 1000ATK for each card sent. You can activate this effect during either player's turn. • You can remove from play all "Crystal Beast" monsters Cards in your Graveyard to return all cards on the field to their owner's Decks.