Stalwart Successor + Blasting Station + Obstinate Gargoyle

Stalwart Successor

Blasting Station

Obstinate Gargoyle

How it works

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