Wizard Monkey, Rise of Dead

Wither (Creatures dealt damage by this creature get -1/-1 counters instead of losing life.)

Rotbind: Whenever a non-token creature you control dies, you may pay {b}{g}. If you do, return that creature to the battlefield with a -1/-1 counter on it if it didn’t have any -1/-1 counters. If it already had one or more -1/-1 counters, it enters with an additional -1/-1 counter. It gains Wither.

{2}{b}{t}: Creatures you control get +X/+X, where X is the number of -1/-1 counters on all creatures.