Crystal Abundance (SDCB-EN022) - Structure Deck: Legend of the Crystal Beasts 1st Edition

Send 4 "Crystal Beast" cards from your Spell & Trap Card Zone to the GY; send all cards on the field to the GY, then Special Summon as many "Crystal Beast" monsters as possible from your GY, up to the number of cards your opponent controlled that were sent to the GY by this card's effect.