Slagstone Refinery - The Brothers' War - 243

Artifact

Mana Cost: {4}

Whenever this artifact or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Uncommon · The Brothers' War · #243 (BRO)

Illustrated by Victor Harmatiuk