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

Teshar, Ancestor's Apostle

Scrap Trawler

Megatog

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 Megatog by sacrificing Scrap Trawler.
5. When Scrap Trawler dies, it triggers, returning Tormod's Crypt from your graveyard to your hand.
6. Resolve the Megatog ability.
7. Repeat.

This clever loop relies on a recursive loop of artifact recycling and historic casting triggers. When you cast Tormod's Crypt, Teshar, Ancestor's Apostle triggers to pull Scrap Trawler back from your graveyard. You then sacrifice Scrap Trawler to Megatog, which triggers Scrap Trawler's ability to return the Tormod's Crypt from your graveyard right back to your hand so you can recast it.