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

Teshar, Ancestor's Apostle

Scrap Trawler

Lotus Petal

Ashnod's Altar

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 Ashnod's Altar by sacrificing Scrap Trawler.
5. When Scrap Trawler dies, it triggers, returning Lotus Petal from your graveyard to your hand.
6. Repeat.

This elegant loop is anchored by Teshar, Ancestor's Apostle, whose historic-spell trigger brings back Scrap Trawler whenever you cast an artifact. By cracking Lotus Petal for mana and feeding Scrap Trawler to Ashnod's Altar, you generate the necessary colorless mana while triggering the Trawler's death ability to return the Lotus Petal straight back to your hand. Because Lotus Petal is a historic spell, recasting it triggers Teshar all over again to loop Scrap Trawler right back onto the battlefield, creating an infinite engine of sacrifices, storm count, and mana of any color.