Teshar, Ancestor's Apostle + Scrap Trawler + Extruder + Delif's Cone

Teshar, Ancestor's Apostle

Scrap Trawler

Extruder

Delif's Cone

How it works

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

This loop relies on Teshar, Ancestor's Apostle acting as the engine's heartbeat, reanimating Scrap Trawler from the graveyard every time you cast a historic spell like Delif's Cone. As you sacrifice Delif's Cone and Extruder devours Scrap Trawler, Scrap Trawler's passive ability triggers to recycle Delif's Cone right back to your hand for another casting. Meanwhile, Extruder's active ability capitalizes on these repeated sacrifices to endlessly pump up your creatures with +1/+1 counters.