The Medium is pretty weak but I have a hard time not accepting a challenge so I wanted to build one around UMD.
However, I found that for some reason that I am hoping is just a mistake, the Medium and ONLY the Medium happens to use Wisdom as their ability modifier for UMD instead of Charisma.
I can't find any information that even brings up how dumb this is, especially considering the Medium is a Charisma based caster and needs all the help it can get. Has this been corrected outside of print? Is there a core rule that automatically corrects it?