Oath of Teferi [Dominaria Prerelease Promos] Modern Masters 2017 Whenever a basic land is

Whenever a basic land is tapped for mana of the chosen color

Return it to the battlefield tapped under its owner's control at the beginning of the next end step

Note the type of mana spent to pay this activation cost

you may have Angel's Tomb become a 3/3 white Angel artifact creature with flying until end of turn

"It moved this way

Oath of Teferi [Dominaria Prerelease Promos] Modern Masters 2017 Whenever a basic land isSet: 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."