Tezzeret the Peeker

+1: Untap up to two target face-down creatures. You may look at those creatures this turn.
-X: Search under your Christmas Tree for a gift with width in centimeters of X or less and look inside it. Then put it back and hide any evidence.
-5: All your gifts become 5/5 creatures until end of turn. They're still gifts, and they'd better still be wrapped.