Stalwart Successor + Blasting Station + Restless Apparition

Stalwart Successor

Blasting Station

Restless Apparition

How it works

1. Activate Blasting Station by tapping it and 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, Blasting Station and Stalwart Successor trigger.
4. Resolve the Blasting Station trigger, untapping it
5. Resolve the Stalwart Successor trigger, putting a +1/+1 counter on Restless Apparition
6. Resolve the Blasting Station ability from step 1
7. Repeat.