Stalwart Successor + Blasting Station + Lesser Masticore

Stalwart Successor

Blasting Station

Lesser Masticore

How it works

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