Nindr, Sire of Cruelty

Mutate {4}{b}{b}{u}{w}
Deathtouch, Wither
Whenver you mutate a creature, Nindr gives each creature you don't control -1/-1 counter.
Whenever a creature you don't control with a
-1/-1 counter on it dies its controller
exiles the top card of their library.
That player loses life equal to its cost.