Silence the Mighty

Destroy target creature with converted mana
cost 3 or greater. If that creature was legendary,
you may gain life equal to that creature's
toughness.
"But a day shall arise, when the dark dragon's lies,
Will be silenced forever and then!
Fair Skyrim will be free from foul Alduin's maw,
Dragonborn be the savior of men!"
~ Song of the Dragonborn