Teshar, Ancestor's Apostle + Scrap Trawler + Sarcatog + Dark Sphere

Teshar, Ancestor's Apostle

Scrap Trawler

Sarcatog

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 Sarcatog by sacrificing Scrap Trawler.
5. When Scrap Trawler dies, it triggers, returning Dark Sphere from your graveyard to your hand.
6. Resolve the Sarcatog ability.
7. Repeat.

This clever loop lets you recast a single zero-mana artifact endlessly to rack up infinite storm count and sacrifice triggers. With Teshar, Ancestor's Apostle providing a steady stream of recursion every time you cast a historic spell, you can repeatedly pull Scrap Trawler back from the graveyard. Meanwhile, Scrap Trawler acts as the engine's glue, recycling Dark Sphere right back to your hand whenever it is sacrificed to Sarcatog. Sarcatog happily devours those artifacts to grow to an infinitely large size while feeding the loop, and Dark Sphere provides the cheap artifact needed to pay for the initial cast and trigger Teshar all over again.