Koa'ki Meiru Drago (BLAR-EN059) - Battles of Legend: Armageddon 1st Edition

During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the GY or reveal 1 Dragon-Type monster in your hand. Neither player can Special Summon LIGHT or DARK monsters.