Treespring Lorian is a common Creature — Beast card from Onslaught (ONS), collector number 293. Current market price: $0.04 (foil $0.48), TCGplayer market prices via Scryfall.
Morph {5}{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.)