Chaos!

Somethings dreadfully wrong! Hordes of slugs and Chaos beasts invade from somewhere...

Everyone wakes up and, depending upon how well they resisted a mental incursion (will save), they experienced anything from a simple bad dream to an infestation of paralyzing slugs to a transformation into a chaos beast. This is beleived to originate within Fershaw and takes the combined resources of Fershaw and Grendalli to suppress over the course of several weeks.

Note: the party opted to 'participate but not play' aka their characters helped but they didn't want to play a bug-hunt so it was a summarized event with minimal XP, etc. rather than several adventures.