Well, when I refreshed my memory of what the PrC was, I had two classes jump to mind immediately, so I do feel like there is an obvious choice or two. Hopefully, I'm wrong, or my execution is original enough for originality points.
Edit: More-or-less finished my entry, at least the actual entry part. Gonna pretty it up, add explanations and fluff and stuff. Made me realize how much of a pain the skill system in this system can be...
And I swear I won't edit another post for the rest of the week. I've met my allowance already tonight.