Lurrus of the Dream-Den + Displacer Kitten + Arcbound Ravager

Lurrus of the Dream-Den

Displacer Kitten

Arcbound Ravager

How it works

1. Cast the artifact from your graveyard by paying 0.
2. Displacer Kitten triggers, blinking Lurrus.
3. Activate Arcbound Ravager by sacrificing the artifact cast in step 1, putting a +1/+1 counter on it.
4. Repeat.

This clever loop uses Lurrus of the Dream-Den to bypass the graveyard's finality by recasting a cheap artifact directly from the yard on each of your turns. Each time you cast that noncreature spell, Displacer Kitten steps in to blink Lurrus, resetting its once-per-turn casting permission so you can do it all over again. Meanwhile, Arcbound Ravager provides a crucial sacrifice outlet to clear the artifact from the battlefield and convert your endless recursion into a mountain of +1/+1 counters.