In celebration of the success of the DFRPG Monsters 2 Kickstarter, here is another Troll adventure seed:
The Troll Wars. Every decade or so, the Cold Fens begins to seethe with trolls in the hundreds, even thousands. They swarm out into the surrounding lands. The "troll wars" that result kill countless trolls but take an enormous toll on the kingdoms around the fens. Recently discovered writings have been discovered claiming this is due to an ancient temple to a "troll god" deep within the fens. If this temple can be cleared, exorcised, and expunged, the troll wars may finally end. Unfortunately, the trolls have already begun to mass in force. A group of intrepid delvers could sneak in and clear the temple and claim a rich reward. But if the trolls don't get them, perhaps the cold, stinking, disease-ridden fens will.
I'll add this to the Adventure Seeds post shortly.