Powerstone Engineer

Creature — Human Artificer • Mana cost: {1}{W} • The Brothers' War • Common

When this creature dies, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

"Well there's your problem—resonance leak lowering output by thirty percent. I can patch that up."

Illustrated by Scott Murphy.