Kerezura, Cartomancer

Flying, Vigilance

Whenever this creature attacks, scry 2

{1}{w}{u}, {t}: Until end of turn, whenever you cast a
spell from your hand, exile cards from the bottom of
your library until you exile a nonland card with
equal or lesser mana value. You may cast that card without paying its mana cost. Then put all cards
exiled this way that weren't cast on the top of your library in a random order