Necroblossom Snarl is a rare Land card from Strixhaven: School of Mages (STX), collector number 269. Current market price: $0.65 (foil $1.17), TCGplayer market prices via Scryfall.
As this land enters, you may reveal a Swamp or Forest card from your hand. If you don't, this land enters tapped. {T}: Add {B} or {G}.