Mighty Mutanimals + Cinderhaze Wretch + Hapatra, Vizier of Poisons

Mighty Mutanimals

Cinderhaze Wretch

Hapatra, Vizier of Poisons

How it works

1. Activate Cinderhaze Wretch's first ability by tapping it.
2. Activate Cinderhaze Wretch's second ability by putting a -1/-1 counter on it.
3. Hapatra triggers, creating a creature token.
4. When the creature token enters, Mighty Mutanimals triggers, putting a +1/+1 counter on Cinderhaze Wretch.
5. Resolve the Cinderhaze Wretch ability from step 2, untapping it.
6. Repeat.