Oath of Jace [Oath of the Gatewatch Prerelease Promos]Set: Oath of the Gatewatch Prerelease Promos Type: Legendary Enchantment Rarity: Rare Cost: {2}{U} When Oath of Jace enters the battlefield, draw three cards, then discard two cards. At the beginning of your upkeep, scry X, where X is the number of planeswalkers you control. "For the sake of the Multiverse, I will keep watch."