Primordial Mist

At the beginning of your end step, you may
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.)
Exile a face-down permanent you control
face up: You may play that card this turn.
(You still pay its costs. Timing rules still apply.)