Ok, so I’ve got a nice big forest world… Now what do I do with it? A very common trope is that of corruption, a beautiful place gets defiled by outsiders. My first idea was some kind of demons, but then I thought of undeath and that fits this setting perfectly. In a setting literally made of life, what is more unnatural than being undead?

I still feel like they should be rare, and of course suitably powerful. Encountering walking skeletons of predatory creatures or shuffling mounds of rotting flesh should be a memorable challenge, and the dangers of falling in battle are heightened by the fact that you might not rest peacefully in the here after.