Yawgmoth, Father of Mechines

When Yawgmoth enters the battlefield put a -1/-1 counter on each other creature.
Whenever another nonartifact creature with a -1/-1 counter on it dies, return it to the battlefield under your control, it is an artifact in addition to its other types.
{p/b}{p/b}: Put a 1-/1- Counter on target creature.
Creatures you control with -1/-1 counters on them have infect.