MTG >Combos >Eternity Vessel +Darksteel Reactor +Masterful Replication +

You must have 20 or more life for this combo to work. With both artifacts in play, cast Masterful Replication copying Eternity Vessel. Play a land, triggering the Eternity Vessel copy's ability and put counters on it equal to your life. At the end of the turn, the copy will revert to a Darksteel Reactor, and by checking that it has 20 counters, you'll win the game.