Cabal Pit is a uncommon Land card from The List (PLST), collector number ODY-315. Current market price: $0.32, TCGplayer market prices via Scryfall.
{T}: Add {B}. This land deals 1 damage to you. Threshold — {B}, {T}, Sacrifice this land: Target creature gets -2/-2 until end of turn. Activate only if there are seven or more cards in your graveyard.