Darksteel Reactor
1b2f1e30-7b30-4853-aeac-3b0933d4ac5e
$4.17 CND
Indestructible (Effects that say "destroy" don't destroy this artifact.)
At the beginning of your upkeep, you may put a charge counter on Darksteel Reactor.
When Darksteel Reactor has twenty or more charge counters on it, you win the game.