Petey, the mastermind

If an artifact has 5 or more +1/+1 counters are on a artifact you control it becomes a 0/0 artifact creature with all its +1/+1 counters on it. {2}{t}: create a part token with "Sacrifice X parts: put X +1/+1 counters on target artifact." Whenever an artifact comes into play untap Petey. you may equip artifact creatures to creatures for {0}. if you do, it gets +1/+1 for its power.same.