Originally posted by Alson: As an aside... Tenser's claims to have a -10 AC maximum. Anyone can validate that one? I never paid any special attention to it, nor have I used Tenser's all that often - but I'm having troubles to believe it was implemented.
I believe my Fighter/Illusionist used Tenser's to get his AC down to -21. From what I can tell, the AC bonus stacks with everything.