Counter Gem (LDS1-EN113) - Legendary Duelists: Season 1 1st Edition

Send all cards in your Spell & Trap Card Zone to the GY. Place as many "Crystal Beast" monsters as possible from your Graveyard in your Spell & Trap Card Zone, face-up, as Continuous Spell Cards. During the End Phase, destroy all face-up "Crystal Beast" cards you control.