Kozilek, the Purifier

+2: Put two 0/1 colorless Eldrazi Spawn with "Sacrifice this creature to add one colorless mana to your mana pool" onto the battlefield.
-3: Exile target permanent, put loyalty counters equal to that permanent's converted mana cost on Kozilek, the Purifier.
-11: You get an emblem, "All creatures you control have +3/+3, indestructible, and annihilator 3"