Slivdrazi Monstrosity

Eldrazi you control are Slivers in addition to their
other types.
Slivers you control have devoid and annihilator 1.
{3}: Create a 1/1 colorless Eldrazi Sliver creature
token. It has "Sacrifice this creature: Add {c}."
As the Slivers spread through the plane, the Eldrazi arrived. As a result, the two races merged, creating a ultimate being.