Urtet, Remnant of Memnarch + Ashnod's Altar + Workshop Assistant + Myr Retriever

Urtet, Remnant of Memnarch

Ashnod's Altar

Workshop Assistant

Myr Retriever

How it works

1. Activate Ashnod's Altar by sacrificing Workshop Assistant, adding CC.
2. When Junk Diver dies, it triggers, returning Myr Retriever from your graveyard to your hand.
3. Cast Myr Retriever by paying 2.
4. Urtet's first ability triggers, creating a 1/1 Myr artifact creature token.
5. Activate Ashnod's Altar twice by sacrificing Myr Retriever and the Myr token, adding CCCC.
6. When Myr Retriever dies, it triggers, returning Workshop Assistant from your graveyard to your hand.
7. Cast Workshop Assistant by paying 3.
8. Repeat.
9. Once you have infinite colorless mana, you may forego sacrificing the Myr tokens.

This loop relies on a clever recycling engine centered around Ashnod's Altar, which provides the mana to cast your creatures while processing them for parts. By sacrificing Workshop Assistant and Myr Retriever back and forth to the Altar, their respective death triggers allow each to pull the other right back out of your graveyard and into your hand. Meanwhile, every time you recast one of these metallic critters, Urtet, Remnant of Memnarch swoops in with its static trigger to manufacture a fresh Myr token, generating a growing army alongside your endless supply of colorless mana.