Brilliance Unleashed + Lithoform Engine + Krark-Clan Ironworks + Maelstrom Wanderer + Zirda, the Dawnwaker

Brilliance Unleashed

Lithoform Engine

Krark-Clan Ironworks

Maelstrom Wanderer

Zirda, the Dawnwaker

How it works

1. Cast Brilliance Unleashed by paying 4. Choose its second mode, targeting any artifact card in your graveyard.
2. Holding priority, activate Lithoform Engine's second ability by paying 1 due to Zirda and tapping it, targeting Brilliance Unleashed.
3. Holding priority, activate Krark-Clan Ironworks by sacrificing Lithoform Engine, adding CC.
4. Resolve the Lithoform Engine ability, copying Brilliance Unleashed, targeting Lithoform Engine.
5. Resolve the copy of Brilliance Unleashed, returning Lithoform Engine from your graveyard to the battlefield as a 3/3 Robot artifact creature.
6. Repeat from step 2.

This intricate loop hinges on turning a modal spell into a self-sustaining engine, wonderfully discounted by Zirda, the Dawnwaker to make copying affordable. By casting Brilliance Unleashed to return Lithoform Engine from the graveyard, you set up the copy chain while Krark-Clan Ironworks stands ready to sacrifice the Engine for mana whenever you need to restart the cycle. Zirda's cost reduction ensures Lithoform Engine's ability only costs {1} to activate, allowing the colorless mana generated from sacrificing it to feed the loop indefinitely. Meanwhile, Maelstrom Wanderer sits comfortably in the background, granting haste to any resulting creature tokens as you generate an endless storm of artifact entries and exits.