Overgrown Tomb is a rare Land — Swamp Forest card from Ravnica Remastered (RVR), collector number 283. Current market price: $10.21 (foil $11.41), TCGplayer market prices via Scryfall.
({T}: Add {B} or {G}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.