Darksteel Reactor - Darksteel - 114

Artifact

Mana Cost: {4}

Indestructible (Effects that say "destroy" don't destroy this artifact.)
At the beginning of your upkeep, you may put a charge counter on this artifact.
When this artifact has twenty or more charge counters on it, you win the game.

Rare · Darksteel · #114 (DST)

Illustrated by Kev Walker