Muldrotha, the Gravetide + Displacer Kitten + Extruder + Gravebreaker Lamia

Muldrotha, the Gravetide

Displacer Kitten

Extruder

Gravebreaker Lamia

How it works

1. Cast the artifact from your graveyard by paying 0.
2. Displacer Kitten triggers, blinking Muldrotha.
3. Activate Extruder by sacrificing the artifact.
4. Repeat.

This clever loop revolves around Muldrotha, the Gravetide, whose graveyard-playing permission lets you repeatedly redeploy an artifact for free. Each time you cast that noncreature spell, Displacer Kitten triggers to blink Muldrotha, which cleverly resets your permanent-type casting permissions so you can cast the artifact from your graveyard again. Meanwhile, Extruder provides the sacrifice outlet needed to put the artifact back into the graveyard while simultaneously pumping your board with infinite +1/+1 counters. Gravebreaker Lamia pulls your key pieces into the graveyard to get things started while making your graveyard casts even cheaper.