Fixten
Honestly, the idea that a sound magician is useless I find strange. Think about the applications solely for battle. Using resonant frequencies to boil your enemies, high pitched noises to disable the animals, easier recon work, you could literally use sound to blast holes into objects How is it useless?
Alright, a little rushed. I do have to say that I hate being teased with "this person is this way because of 'that'" just friggin tell us. A lot of authors seem to use 'that'because they can't quite think of what they want to do, sometimes they completely forget about it and we, the readers, are left hanging. Either reveal it right away or just ignore mentioning it and reveal it later. Don't act like you're hiding something super special.