Keyarth, Enmity Reorient

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.)
Creature spells you cast cost {x} less to cast and have exalted, where X is the number of creatures Keyarth, Enmity Reorient devoured.
"And the fighting suddenly ceased; united in the midriff, peace reigned over new life"