Mastery of the Unseen

Enchantment

Oracle text:

Whenever a permanent you control is turned face up, you gain 1 life for each creature you control.
{3} {W} : Manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Collection:

Fate Reforged

Rarity:

Rare