Sage-Eye Harrier is a common Creature — Bird Warrior card from Khans of Tarkir (KTK), collector number 20. Current market price: $0.03 (foil $0.30), TCGplayer market prices via Scryfall.
Flying Morph {3}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)