Shambling Vent is a rare Land card from Battle for Zendikar Promos (PBFZ), collector number 244s. Current market price: — (foil $2.19), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {W} or {B}. {1}{W}{B}: Until end of turn, this land becomes a 2/3 white and black Elemental creature with lifelink. It's still a land.