Teshar, Ancestor's Apostle + Scrap Trawler + Lotus Petal + Altar of Dementia

Teshar, Ancestor's Apostle

Scrap Trawler

Lotus Petal

Altar of Dementia

How it works

1. Cast Lotus Petal by paying its mana cost.
2. Teshar triggers, returning Scrap Trawler from your graveyard to the battlefield.
3. Activate Lotus Petal by tapping and sacrificing it.
4. Activate Altar of Dementia by sacrificing Scrap Trawler.
5. When Scrap Trawler dies, it triggers, returning Lotus Petal from your graveyard to your hand.
6. Resolve the Altar of Dementia ability.
7. Repeat.

This loop relies on Teshar, Ancestor's Apostle acting as an engine that constantly brings back Scrap Trawler whenever you cast a historic spell, while Scrap Trawler's ability ensures your resources are never truly lost by recurring cheaper artifacts from your graveyard when things hit the bin. By sacrificing Lotus Petal for mana and feeding Scrap Trawler to Altar of Dementia, you generate the fuel needed to keep casting Lotus Petal as a historic spell over and over. As Lotus Petal hits the stack, Teshar triggers to loop Scrap Trawler right back to the battlefield, completing a self-sustaining cycle that mills out your opponents through Altar of Dementia's sacrifice trigger.