Snarling Undorak is a common Creature — Beast card from Onslaught (ONS), collector number 283. Current market price: $0.08 (foil $0.55), TCGplayer market prices via Scryfall.
{2}{G}: Target Beast creature gets +1/+1 until end of turn. Morph {1}{G}{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.)