Sagu Archer is a common Creature — Snake Archer card from Khans of Tarkir (KTK), collector number 146. Current market price: $0.04 (foil $0.19), TCGplayer market prices via Scryfall.
Reach (This creature can block creatures with flying.) Morph {4}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)