Steel Hellkite [Tarkir: Dragonstorm Commander]

Set: Tarkir: Dragonstorm Commander Type: Artifact Creature — Dragon Rarity: Rare Cost: {6} 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.