"Precisely so." He agreed, "Though trying to figure out what those are is..." He sighed, kneading at his temple again, "Well, it's not impossible, but it's considerably more difficult than I really want to think about right now."

He shook his head, "But knowing that it was initially mis-cast, and suspecting that the mirror is part of it is still considerably more information than I had before. I can't say I'm any closer to being able to reverse it, but adding those revisions to my notes, adjusting the translations later, I should be able to work something out to counter it."

Another little head shake, "I just... don't know if that's entirely safe without knowing what the caster was trying to do in the first place."