Steel Hellkite is a rare Artifact Creature — Dragon card from Commander 2021 (C21), collector number 266. Current market price: $0.37, TCGplayer market prices via Scryfall.
Flying {2}: This creature gets +1/+0 until end of turn. {X}: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by this creature this turn. Activate only once each turn.