“ (Apologies to GRRM and HBO)
A group of northerners want to bring the Old Gods back to the south. They grow cuttings from the white trees seeking the blessings of the Old Gods on the project, and when the saplings are big enough, they carve faces in them and secretly plant them in forests all over the south, to extend the 'reach' of the Old Gods.
The plan works of course, but the trees are *baby gods*, and behave as such when invoked.”
“ Moonlight shines down on the tranquil scene of a slumbering inn along one of the many roads that cross the land. Trees sway gently in the night air, and the stars twinkle brightly. All is quiet as the PCs snore away, a fine tendril of smoke curlsrnunder their door. The tavern is on fire! This is particularly bad news if the PCs own any horses - the screaming they hear is probably from their mounts! Panicky people are rushing about with buckets of water, trying to tame the flames. The fire fighting effort is not very coordinated as everybody is either hungover or still drunk, including the PCs. Hurry!”
“ A Deity of some sort has unleashed a plague of bookworms or something like that in the area. Almost all spellbooks are destroyed, along with bardic and historical books.”