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 Rock monster in your hand. When your opponent activates a Spell Card (Quick Effect): You can Tribute this card; negate the activation, and if you do, destroy that card.
| Detail | Value |
|---|---|
| Card Type | Effect Monster |
| Attribute | EARTH |
| Level | 4 |
| ATK | 1900 |
| DEF | 1200 |
| Race | Rock |
| Archetype | Koa'ki Meiru |