Teshar, Ancestor's Apostle + Scrap Trawler + Carrion Feeder + Dark Sphere

Teshar, Ancestor's Apostle

Scrap Trawler

Carrion Feeder

Dark Sphere

How it works

1. Cast Dark Sphere by paying its mana cost.
2. Teshar triggers, returning Scrap Trawler from your graveyard to the battlefield.
3. Activate Dark Sphere by tapping and sacrificing it.
4. Activate Carrion Feeder by sacrificing Scrap Trawler.
5. When Scrap Trawler dies, it triggers, returning Dark Sphere from your graveyard to your hand.
6. Resolve the Carrion Feeder ability.
7. Repeat.

This clever loop turns graveyard recycling into an infinite engine by leveraging Teshar, Ancestor's Apostle and Scrap Trawler in tandem. When you cast Dark Sphere, Teshar triggers to pull Scrap Trawler right back out of the graveyard. From there, you can sacrifice Dark Sphere to fulfill its defensive duty, and then sacrifice Scrap Trawler to Carrion Feeder's hungry maw. That death triggers Scrap Trawler, allowing you to return Dark Sphere safely to your hand so you can cast it all over again—all while Carrion Feeder grows infinitely large on a steady diet of your looping artifacts.