I'd put my money on the deities or even the City itself. We know they like to base curses on stuff from other worlds, and a few people have said something about this one being based on some religion. There's people that believe in some weird stuff...

[Although she tried not to let it show, it was a relief to hear that Klarth was mostly unaffected. With everything going on, it was easy to be concerned for her friends, but there was no way she was going to pester them all the time and ask if they were okay.]

Not that what's happening to you looks like a party, but I guess it'd be worse if you'd been taken down to that freakshow in the Underground.