Muldrotha, the Gravetide + Displacer Kitten + Sol Ring + Extruder

Muldrotha, the Gravetide

Displacer Kitten

Sol Ring

Extruder

How it works

1. Activate Sol Ring by tapping it, adding CC.
2. Activate Extruder by sacrificing Sol Ring, putting a +1/+1 counter on a creature you control.
3. Cast Sol Ring from your graveyard by paying 1.
4. Displacer Kitten triggers, blinking Muldrotha.
5. Repeat.

This clever loop relies on Muldrotha, the Gravetide's permission to continually replay artifacts from your graveyard, turning Sol Ring into a recurring resource that generates double colorless mana on each iteration. Extruder acts as our sacrifice outlet, happily consuming that Sol Ring to pump up your creatures with +1/+1 counters while clearing it away so Muldrotha can target it again. Meanwhile, every time you recast the artifact, Displacer Kitten triggers off that noncreature spell to blink Muldrotha, effectively resetting the once-per-turn casting restrictions and keeping this engine humming indefinitely.