Still putting together details for my Gencon event, and I would like to crowdsource some ideas for evothaum attacks made by genre savvy, nothing to lose Outsider cultists. They have a form of sponsored magic that allows for evothaum when breaking the 7th law, as well as for transformations and biothaum that corrupts or distorts reality. It's a one shot end of the world sort of game, so I'm not worried about horrific long term consequences for the PCs. They need to be afraid and in over their head. Any thoughts on what type of effects to throw around?