Sai, Master Thopterist + Myr Retriever + Scrap Trawler + Krark-Clan Ironworks

Sai, Master Thopterist

Myr Retriever

Scrap Trawler

Krark-Clan Ironworks

How it works

1. Activate Krark-Clan Ironworks by sacrificing Scrap Trawler, adding CC.
2. When Scrap Trawler dies, it triggers, returning Myr Retriever from your graveyard to your hand.
3. Cast Myr Retriever by paying 2.
4. Sai triggers, creating a 1/1 Thopter artifact creature token.
5. Activate Krark-Clan Ironworks twice by sacrificing the Thopter and Myr Retriever, adding CCCC.
6. When Myr Retriever dies, it triggers, returning Scrap Trawler from your graveyard to your hand.
7. Cast Scrap Trawler by paying 3.
8. Sai triggers, creating a 1/1 Thopter artifact creature token.
9. Repeat.

This resilient loop relies on Krark-Clan Ironworks to convert your artifacts into a steady stream of colorless mana, which in turn fuels the casting of your recursion pieces. As Scrap Trawler and Myr Retriever trade places between the battlefield and the graveyard, Scrap Trawler's ability continuously retrieves whichever partner just perished based on their respective mana values. Meanwhile, Sai, Master Thopterist watches the artifact spells flow and populates your board with an endless swarm of flying Thopter tokens to wrap up the game.