Does it exist? If so, well sorry 'bout that. Silly me.
But... if not... IT SHOULD BE!
It would probably be the most popular polymorph and everyone will want to get it
There will be parties in all the cities of dancing frolicking fauns, all playing the panflute or being adorable, with warm smiles and boopable noses
Maybe also a tiny faun non-combat pet as well. A faun fawn! They could be super cute with big eyes, and be just as good with the panflute and maybe if that is possible they could be programmed to play the panflute whenever the player plays panflute!
I simp for vampire lords and Glemyos Wildhorn