Sheogorath, God of Madness.

Indestructible, Reach.
Sheogorath enters the battlefield with X Greymarch counters on him. At the beginning of your upkeep, remove one counter. When they reach Zero, transform him.
{3}Target creature becomes a 0/1 Green Goat.
{2}Target permanent is exiled for two turns, then returns to the battlefield.
{1}{t}You gain 2 life.