Blasting Station + Thran Vigil + Rendclaw Trow

Blasting Station

Thran Vigil

Rendclaw Trow

How it works

1. Activate Blasting Station by tapping it and sacrificing Rendclaw Trow.
2. When Rendclaw Trow 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 Rendclaw Trow.
5. Resolve the Blasting Station trigger, untapping it.
6. Resolve the Blasting Station ability from step 1.
7. Repeat.