Kozilek's Return [Oath of the Gatewatch Prerelease Promos] Dissension (Each {U} in the mana

(Each {U} in the mana costs of permanents you control counts toward your devotion to blue

Damage wears off

Set: Secret Lair Drop Series Type: Creature — Dragon Rarity: Mythic Cost: {6}{R}{R} Flying

Set: Legends Type: Legendary Creature — Shapeshifter Rarity: Rare Cost: {1}{W}{U}{B} At the beginning of your upkeep

You might leave here

Kozilek's Return [Oath of the Gatewatch Prerelease Promos] Dissension (Each {U} in the manaSet: 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.