Skemfar Elderhall is a uncommon Land card from Kaldheim (KHM), collector number 268. Current market price: $0.31 (foil $0.32), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {G}. {2}{B}{B}{G}, {T}, Sacrifice this land: Up to one target creature you don't control gets -2/-2 until end of turn. Create two 1/1 green Elf Warrior creature tokens. Activate only as a sorcery.