Teshar, Ancestor's Apostle + Carrion Feeder + Ambrosia Whiteheart

Teshar, Ancestor's Apostle

Carrion Feeder

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 triggers, returning another artifact that can be cast for 0 from the battlefield to your hand.
4. Resolve the artifact spell cast in step 1.
5. Activate Carrion Feeder by sacrificing Ambrosia Whiteheart
6. Repeat.

This elegant loop turns zero-mana artifacts into a perpetual engine by leveraging Teshar, Ancestor's Apostle and its flying presence to continuously resurrect Ambrosia Whiteheart from the graveyard whenever a historic spell is cast. As Ambrosia Whiteheart enters the battlefield, its triggered ability bounces your zero-mana artifact right back to your hand so it can be replayed, fueling the Teshar trigger all over again. Meanwhile, Carrion Feeder sits ready to sacrifice Ambrosia Whiteheart to clear the way for the next iteration, letting you cycle the loop infinitely while growing larger with every sacrifice.