I had and idea for and up coming game and wanted to run by anyone that is willing to take a look.
My character witch level 12 cast transformation on him self can he still use his hex ability or does is a hex same as casting a spell?
You only lose abilites based on form
since a Hex has no basis in physical form you keep it and can use it even if your form cannot speak since (Su) have no Verbal/Somatic etc requirments.
Mileage with your GM may vary though
e.g. a GM may say your form must be able to make a noise like a cackle for you to use the cackle Hex even though there is no such requirement as cackle can be used in a zone of silence