Stalwart Successor + Blasting Station + Safehold Elite

Stalwart Successor

Blasting Station

Safehold Elite

How it works

1. Activate Blasting Station by tapping it and sacrificing Safehold Elite
2. When Safehold Elite dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Safehold Elite 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 Safehold Elite
6. Resolve the Blasting Station ability from step 1
7. Repeat.