Stalwart Successor + Kitchen Finks + Altar of Dementia

Stalwart Successor

Kitchen Finks

Altar of Dementia

How it works

1. Activate Altar of Dementia by sacrificing Kitchen Finks
2. When Kitchen Finks dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Kitchen Finks enters, it and Stalwart Successor trigger.
4. Resolve the Kitchen Finks trigger, causing you to gain 2 life.
5. Resolve the Stalwart Successor trigger, putting a +1/+1 counter on Kitchen Finks
6. Resolve the Altar of Dementia ability.
7. Repeat.