Stalwart Successor + Viscera Seer + Restless Apparition

Stalwart Successor

Viscera Seer

Restless Apparition

How it works

1. Activate Viscera Seer by sacrificing Restless Apparition
2. When Restless Apparition dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Restless Apparition enters, Stalwart Successor triggers, putting a +1/+1 counter on Restless Apparition
4. Resolve the Viscera Seer ability.
5. Repeat.