Muldrotha, the Gravetide + Displacer Kitten + Arcbound Ravager + Temur Battlecrier

Muldrotha, the Gravetide

Displacer Kitten

Arcbound Ravager

Temur Battlecrier

How it works

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

This loop turns Muldrotha, the Gravetide into an engine of endless rebirth by leveraging its ability to replay permanents straight from the graveyard. Whenever you recast that artifact for free—helped along by Temur Battlecrier reducing costs if your power threshold is met—Displacer Kitten triggers off the noncreature spell to blink Muldrotha, refreshing her permissions. Before the artifact even hits the graveyard again, you can feed it to Arcbound Ravager's sacrifice ability to pile up infinite +1/+1 counters and trigger mechanisms, letting you recast it endlessly right from the yard.