I'm cool with the CS, the only thing I would say is the same as Zarkun, there already was a wizard who used the magic but he has been absent for months. So I'm still okay if you decide to keep or change the magic that you already have. But as a thought, I kind of thought your character's magic was more about tremors rather than sound at first when you mentioned the the vibrations in the water. But they're probably similar enough to just keep how you have things right now, but as I said before, I'm cool with your CS.