Teshar, Ancestor's Apostle + Scrap Trawler + Extruder + Tormod's Crypt

Teshar, Ancestor's Apostle

Scrap Trawler

Extruder

Tormod's Crypt

How it works

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

This ingenious loop turns a modest graveyard-hate artifact into an engine of relentless recursive growth by leveraging the interconnected triggers of your entire board. You start by casting Tormod's Crypt for free, which immediately prompts Teshar, Ancestor's Apostle to pluck Scrap Trawler straight out of your graveyard and back onto the battlefield. From there, you sacrifice Tormod's Crypt to exile a graveyard and feed Scrap Trawler to Extruder's sacrifice ability, pumping your team with +1/+1 counters. Because Scrap Trawler hits the graveyard, its own passive ability triggers to return Tormod's Crypt right back to your hand, ready to be cast again and restart the whole cycle.