Tomb Blade is a rare Artifact Creature — Necron card from Warhammer 40,000 Commander (40K), collector number 64. Current market price: $0.36, TCGplayer market prices via Scryfall.
Flying Whenever this creature deals combat damage to a player, that player loses life equal to the number of creatures they control unless they sacrifice a creature of their choice. Unearth {6}{B}{B}