Rainbow Dragon

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 and/or in your Graveyard. This card cannot activate its effects the turn it is Special Summoned. ● Send all "Crystal Beast" cards you control to the Graveyard; this card gains 1000 ATK for each card sent. You can activate this effect during either player's turn. ● You can remove from play all "Crystal Beast" Monster Cards in your Graveyard to return all cards on the field to their owners' Decks.