Keldon Megaliths is a uncommon Land card from Future Sight (FUT), collector number 170. Current market price: $0.36 (foil $0.73), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {R}. Hellbent — {1}{R}, {T}: This land deals 1 damage to any target. Activate only if you have no cards in hand.