Blood Crypt is a rare Land — Swamp Mountain card from Lorwyn Eclipsed Promos (PECL), collector number 262p. Current market price: $9.24 (foil $10.31), TCGplayer market prices via Scryfall.
({T}: Add {B} or {R}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.