Kuldotha Flamefiend is a uncommon Creature — Elemental card from Mirrodin Besieged (MBS), collector number 69. Current market price: $0.07 (foil $0.50), TCGplayer market prices via Scryfall.
When this creature enters, you may sacrifice an artifact. If you do, this creature deals 4 damage divided as you choose among any number of targets.