The Titans Three

Trample, Indestructible Annihilator 5
The Titans Three cost X less to cast where X is the total converted mama cost of all Eldrazi creatures you control.
When The Titans Three enters the battlefield, Exile all non-land, non- creature permanents, then draw cards equal to the number of cards exiled this way, then gain control of all creatures.
In the end, we are all consumed by the endless abyss.