Trundlmaw

Trample, Devour 3
Trundlmaw isn't a creature unless it has five or more awakening counters on it.
Whenever a creature an opponent controls attacks, put an awakening counter on Trundlmaw.
It arose from the ground with a scream as that of a hellkite, petrifying us all in fear. There was no stopping a beast as monstrous and gluttonous as this.