Treetop Village is a uncommon Land card from Urza's Legacy (ULG), collector number 143. Current market price: $4.25 (foil $82.66), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {G}. {1}{G}: This land becomes a 3/3 green Ape creature with trample until end of turn. It's still a land. (It can deal excess combat damage to the player or planeswalker it's attacking.)