Perilous Research [Commander 2011] Merfolk Warrior you can reveal 1 "Iron

you can reveal 1 "Iron Core of Koa'ki Meiru" in your hand to Special Summon 1 Level 4 or lower "Koa'ki Meiru" monster from your Deck

Equip {1} ({1}: Attach to target creature you control

Set: Battles of Legend: Light's Revenge Card type: Effect Monster Rarity: Ultra Rare Attack: 2000 Defense: 0 You can send 1 other LIGHT monster from your hand to the GY

II — Add {R}{R}

Perilous Research [Commander 2011] Merfolk Warrior you can reveal 1 "IronSet: Commander 2011 Type: Instant Rarity: Uncommon Cost: {1}{U} Draw two cards, then sacrifice a permanent. When the School of the Unseen fell, so many magical treasures lay abandoned that no amount of death could deter the stream of thieves and desperate scholars.