Kozilek's Return [Oath of the Gatewatch Prerelease Promos] Shade choose a nonland permanent that

choose a nonland permanent that players controls

decay in all flesh

Set: The Brothers' War Prerelease Promos Type: Legendary Artifact — Powerstone Rarity: Rare Cost: {5} When The Mightstone and Weakstone enters the battlefield

as only the ultimate conquerors could

−7: Destroy all non-Zombie creatures

Kozilek's Return [Oath of the Gatewatch Prerelease Promos] Shade choose a nonland permanent thatSet: Oath of the Gatewatch Prerelease Promos Type: Instant Rarity: Mythic Cost: {2}{R} Devoid (This card has no color.) Kozilek's Return deals 2 damage to each creature. Whenever you cast an Eldrazi creature spell with mana value 7 or greater, you may exile Kozilek's Return from your graveyard. If you do, Kozilek's Return deals 5 damage to each creature.