Ashen Colossus

Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with one +1/+1 counter on it for each of those creatures)
If Ashen Colossus devoured three or more creatures, it gains menace.
--------------------------------------------------------------
As Atron crumbled, monsters long trapped beneath it's surface ran rampant. Feasting on what little people were left.