Teshar, Ancestor's Apostle + Blasting Station + Ambrosia Whiteheart

Teshar, Ancestor's Apostle

Blasting Station

Ambrosia Whiteheart

How it works

1. Cast an artifact in your hand by paying 0.
2. Teshar triggers, returning Ambrosia Whiteheart from your graveyard to the battlefield.
3. When Ambrosia Whiteheart enters, it and Blasting Station trigger.
4. Resolve the Ambrosia Whiteheart trigger, returning another artifact that can be cast for 0 from the battlefield to your hand.
5. Resolve the Blasting Station trigger, untapping it.
6. Resolve the artifact spell cast in step 1.
7. Activate Blasting Station by tapping it and sacrificing Ambrosia Whiteheart
8. Repeat.