Shubb-Niggurath

Exproof.
When Shubb-Niggurath enter the battlefield create two 2/2 black Goat creature tokens with deathtouch.
{t}: Create four 2/2 black Goat creature tokens with deathtouch.
Sacrifice ten Goat tokens: Search your library or outside of the game for an Outer God Creature and put in into the battlefield tapped.
Sacrifice a Goat token: At the beginning of your end phase return Shubb.Niggurath from the graveyard to the battlefield.