Blasting Station + Wingrattle Scarecrow + Thran Vigil

Blasting Station

Wingrattle Scarecrow

Thran Vigil

How it works

1. Activate Blasting Station by tapping it and sacrificing Wingrattle Scarecrow.
2. When Wingrattle Scarecrow dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Thran Vigil and Blasting Station trigger.
4. Resolve the Thran Vigil trigger, putting a +1/+1 counter on Wingrattle Scarecrow.
5. Resolve the Blasting Station trigger, untapping it.
6. Resolve the Blasting Station ability from step 1.
7. Repeat.