Thanks for your input TSoL!

Having said that, I'm still not hundred-percent on the theory that Carny is a witch. Only one of the abilities are obviously to do with writing (rewrite).

With that being the case, why would he still say three players have the ability to alter the writeups? I guess there's the possibility that he goofed, but that's a pretty simple error to goof up on, and it wouldn't have happened in the first place if he stuck to there being one person who can alter the writeups.