Blasting Station + Kithkin Spellduster + Thran Vigil

Blasting Station

Kithkin Spellduster

Thran Vigil

How it works

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