Miko, Twilight of Oreskos

Whenever you cast a Phyrexian creature or artifact creature spell, incubate X, where X is that spell's mana value. (Create an Incubator token with X +1/+1 counters on it and " 2: Transform this artifact." It transforms
into a Phyrexian artifact creature.) At the beginning of each end step, if a Phvrexian
died under your control this turn, proliferate.