Tomb Fortress is a rare Land card from Warhammer 40,000 Commander (40K), collector number 168. Current market price: $4.92, TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {B}. {2}{B}{B}{B}, {T}, Exile this land: Mill four cards, then return a creature card from your graveyard to the battlefield. Activate only as a sorcery.