Stalwart Successor + Altar of Dementia + Scuzzback Marauders

Stalwart Successor

Altar of Dementia

Scuzzback Marauders

How it works

1. Activate Altar of Dementia 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. When Scuzzback Marauders enters, Stalwart Successor triggers, putting a +1/+1 counter on Scuzzback Marauders
4. Resolve the Altar of Dementia ability.
5. Repeat.