Mistfire Adept is a uncommon Creature — Human Monk card from Fate Reforged (FRF), collector number 42. Current market price: $0.09 (foil $0.39), TCGplayer market prices via Scryfall.
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Whenever you cast a noncreature spell, target creature gains flying until end of turn.