Oath of Teferi [Dominaria Prerelease Promos] Human Cleric the controller of the permanent

the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step

"Hard to imagine

Set: Alpha Edition Type: Basic Land — Swamp Rarity: Common ({T}: Add {B}

where X is 1 plus the exiled creature's mana value

Set: Core Set 2019 Prerelease Promos Type: Legendary Creature — Dragon Rarity: Rare Cost: {4}{R}{R} Flying

Oath of Teferi [Dominaria Prerelease Promos] Human Cleric the controller of the permanentSet: Dominaria Prerelease Promos Type: Legendary Enchantment Rarity: Rare Cost: {3}{W}{U} When Oath of Teferi enters the battlefield, exile another target permanent you control. Return it to the battlefield under its owner's control at the beginning of the next end step. You may activate the loyalty abilities of planeswalkers you control twice each turn rather than only once. "For the lost and forgotten, I will keep watch."