Impending Doom!

The worst result on my wandering creature list is something I called "Dragon / Impending Doom." The dragon part is pretty obvious but what is an impending doom?

I want it to be something negative, something potentially connected to the current plotline/thread/antagonist but not something that permanently will debilitate the players long term. For the moment, I'm going to keep things generic but my idea is that I could fill these tables out for different factions/antagonists to reflect their particular characters and contexts.

Obviously, not every option will work for every situation but this gives me good, evocative starting points that I can use in a pinch if I don't have a particular doom in mind.