Steel Hellkite

Flying
{2}: Steel Hellkite gets +1/+0 until end of turn.
{x}: Destroy each nonland permanent with converted mana cost X whose controller was dealt combat damage by Steel Hellkite this turn. Activate this ability only once each turn.
"Fury, rage, and pure destructive force. Welcome."
-Jhoira, Harbinger of the Eldrazi