Blast-Furnace Hellkite

Nibbio Infernale della Fornace Esplosiva (Blast-Furnace Hellkite) (it)

Creature - Dragon | Power/Toughness: 5 / 5 (CMC 9)
Artifact offering (You may cast this spell as though it had flash by sacrificing an artifact and paying the difference in mana costs between this and the sacrificed artifact. Mana cost includes color.)
Flying, double strike
Creatures attacking your opponents have double strike.