Koskun Thaumaturgist

{t}: Choose target nonland permanent. Flip a
coin. If you win the flip, turn that permanent
face down. It is now a 2/2 colorless creature.
If you lose the flip, turn Koskun Thaumaturgist
face down.
Morph {5}{u}{r} (You may cast this card face down
as a 2/2 colorless creature for {3}. Turn it face up
anytime for its morph cost.)