Koa'ki Meiru Beetle [SOVR-EN000] Super Rare

During each of your End Phases, destroy this card unless you send 1 Iron Core of Koa'ki Meiru from your Hand to the Graveyard or reveal 1 Insect-Type Monster in your hand. When a LIGHT or DARK monster is Special Summoned in face-up Attack Position, change the Summoned monster to Defense Position.