Insatiable Maw

Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters
the battlefield with twice that many +1/+1 counters
on it.)

Trample

At the beginning of your upkeep, sacrifice
another creature and put two +1/+1 counters
on Insatiable Maw. If you can't, Insatiable Maw
deals damage to you equal to its power.