Doing a homebrew mini-adventure to fill the void since we're going to be missing two players for a month. Gonna be an aberration/fire dungeon and I'm stuck choosing between a few areas that interest me alot. Where would a sudden arson/apocalypse/fire cult most likely pop up between these nations (since this has plot stuff related to a later campaign I want to do, I've included some plot ideas I've had where applicable)?
Andoran, Kyonin (burn the corruption of their forests but don't realize it'll take out a much larger area than that), Land of the Linnorm Kings (create a fire that is antithetical to Linnorms), Molthune (literally burning records), Rahaduom (trying to make "anti-divine" fire), Razmiran (don't know).