Brilliance Unleashed + Lithoform Engine + Krark-Clan Ironworks + Zirda, the Dawnwaker + Alibou, Ancient Witness

Brilliance Unleashed

Lithoform Engine

Krark-Clan Ironworks

Zirda, the Dawnwaker

Alibou, Ancient Witness

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.

By casting Brilliance Unleashed to return Lithoform Engine from your graveyard, you set the stage for an infinite recursion fueled by Zirda, the Dawnwaker's cost reduction, which drops Lithoform Engine's copy ability to a mere single generic mana. You can then use Krark-Clan Ironworks to sacrifice Lithoform Engine for mana to sustain the loop—or sacrifice the newly reanimated artifact copies it generates—while Alibou, Ancient Witness stands ready to leverage your massive army with haste and devastating combat triggers.