Saorukk, The Decimator

Haste, Trample
Devour 2 (As this enters the battlefield you may sacrifice any number of creatures, This creature enters the battlefield with four times that many +1/+1 counters on it)
As long as Saorukk, The Decimator has more than ten +1/+1 counters on it and it is the only creature on the battlefield under your control, it has indestructible