Illusion magic is a thing, but not something heavily emphasized by any of the magic schools available to players. They're used most heavily by the Sylph beastmen, but not exclusively, so that shouldn't stop you from using something similar on your character. There's an entire country of scholars and mages called Sharlayan that has access to all sorts of different magic types, so your character could easily be from there.
Dancers as they exist in past titles aren't a thing in the lore yet, but you can very easily just say that you use magicks as you dance. They don't have to be tied into each other, but if you do want to tie your magic to your dancing then you can look at conjury. Conjury requires meditation, so you might say that dancing puts your character into a sort of meditative state that lets them use those magicks more effectively.
Dancers as they exist in past titles aren't a thing in the lore yet, but you can very easily just say that you use magicks as you dance. They don't have to be tied into each other, but if you do want to tie your magic to your dancing then you can look at conjury. Conjury requires meditation, so you might say that dancing puts your character into a sort of meditative state that lets them use those magicks more effectively.
