What lists benefit most from Marvin, Murderous Mimic?

Marvin has seen a ton of play since release; but many consider it to be under-explored! Found in multiple high performing Sisay lists; Marvin has become a staple in certain lists.

Have you found any cool cEDH-powered synergies with Marvin? What lists could you see Marvin emerging in?

https://youtu.be/gakwdCQgqIw?si=eECyEARxoAV8R4EN