Mikaeus, the Unhallowed + Scuzzback Marauders + Carrion Feeder

Mikaeus, the Unhallowed

Scuzzback Marauders

Carrion Feeder

How it works

1. Activate Carrion Feeder by sacrificing Scuzzback Marauders.
2. When Scuzzback Marauders dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Resolve the Carrion Feeder ability.
4. Activate Carrion Feeder by sacrificing Scuzzback Marauders.
5. When Scuzzback Marauders dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
6. Resolve the Carrion Feeder ability.
7. Repeat.