Ancalagon the Black

Flying, Rampage(Whenever this creature becomes
blocked, it gets +X/+X until end of turn for each
creature blocking it beyond the first.)
When Ancalagon the black dies or is exiled,
destroy two lands that opposing player controls.
So terrible was Ancalagon's onslaught that the armies
of the Valar were driven back from the gates of
Angband, and his coming was said to have been accompanied by a tempest of fire and lightning.