"Uh, I have that," says Aether. "I'm a naturally defensive subtle artist. I'm not all-powerful. A stronger artist can break my shielding. It doesn't affect anything else besides subtle arts, either, I can be just as easily affected by a mind-affecting arcane or divine spell or by racial traits or whatever as anyone else. You're probably all better protected than some random person, but you shouldn't expect to defy dragon will or countermand divine orders or whatever it is you people usually do with your time."