Darksteel Reactor [Darksteel] Kaito −1: Target creature gets +X/+X

−1: Target creature gets +X/+X until end of turn

Set: Streets of New Capenna Commander Promos Type: Enchantment Rarity: Rare Cost: {3}{R} At the beginning of your end step

Set: Hour of Devastation Prerelease Promos Type: Legendary Creature — God Rarity: Mythic Cost: {3}{B}{R} Whenever a creature with a -1/-1 counter on it dies

Set: Portal Second Age Type: Sorcery Rarity: Rare Cost: {4}{R}{R} Each player sacrifices four lands

I'm never taking them off

Darksteel Reactor [Darksteel] Kaito −1: Target creature gets +X/+XSet: Darksteel Type: Artifact Rarity: Rare 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 Darksteel Reactor. When Darksteel Reactor has twenty or more charge counters on it, you win the game.