Teshar, Ancestor's Apostle + Scrap Trawler + Grinding Station + Tormod's Crypt

Teshar, Ancestor's Apostle

Scrap Trawler

Grinding Station

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. When Scrap Trawler and Tormod's Crypt enter, Grinding Station triggers twice, untapping Grinding Station.
4. Activate Tormod's Crypt by tapping and sacrificing it.
5. Activate Grinding Station by tapping it and sacrificing Scrap Trawler.
6. When Scrap Trawler dies, it triggers, returning Tormod's Crypt from your graveyard to your hand.
7. Resolve the Grinding Station ability.
8. Repeat.