Kozilek, Compleated Reality

({p/c} can be paid with either {c} or 2 life.)

Trample

Whenever Kozilek, Compleated Reality deals combat damage to a creature that's one or more colors, exile that creature. Return it to the battlefield under your control at the beginning of the next end step with a +1/+1 counter on it. It becomes
a colorless artifact in addition to its other types.