Foreboding Ruins is a rare Land card from Shadows over Innistrad (SOI), collector number 272. Current market price: $0.42 (foil $1.14), TCGplayer market prices via Scryfall.
As this land enters, you may reveal a Swamp or Mountain card from your hand. If you don't, this land enters tapped. {T}: Add {B} or {R}.