Adding card tags for everyone's sanity, so we can see rules text and CMC.

Edit: If we could somehow add a way to copy the Gyruda ability, it would have a much higher probability of chaining to completion.


Panharmonicon
Yarok, the Desecrated
Naban, Dean of Iteration

Yarok is odd CMC, so involves not having Gy as companion. It could work in Commander (Yarok Commander, Gyruda companion with all even CMC cards and many clones).

Naban needs another combo piece to hack creature types (change the text on Naban, or change Gy to a Wizard)

But Panharmonicon is an even cmc artifact and easy to cast...