Dragon of the Crystal Flame

Hack-Whenever you cast a noncreature spell, gain control of target creature you don't control until end of turn. Put a +X/+0 on this creature until end of turn where X is the power of target creature.
Whenever a sorcory or instant targets Dragon of the Crystal Flame, sacrifice this creature.
Haste
"The dragon never shows itself until when your most vulnerable." -Terrivon the Brave