Niapmi, Accomplice of Pain

Whenever Niapmi, Accomplice of Pain attacks,
put a -1/-1 on each other creature.
Whenever another creature dies, put a +1/+1
counter on Niapmi, if it was sacrificed, put two
on instead
{x}, remove X -1/-1 counters from target creature:
Put X -1/-1 counters on target creature with the
same controller. That player loses X life.