Kin-Tree Warden is a common Creature — Human Warrior card from The List (PLST), collector number KTK-139. Current market price: $0.34, TCGplayer market prices via Scryfall.
{2}: Regenerate this creature. Morph {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.)