Mikaeus, the Unhallowed + Viscera Seer + Scuzzback Marauders

Mikaeus, the Unhallowed

Viscera Seer

Scuzzback Marauders

How it works

1. Activate Viscera Seer 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 Viscera Seer ability.
4. Activate Viscera Seer 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 Viscera Seer ability.
7. Repeat.