In the dank,dense areas of the world where the vigorous and the decaying are intertwined and indivisable, lives the wise bagabond. But getting him to impart his knowledge is quite a chore.
A reclusive race, the Ragori live deep in the heart of the Purvis Swamp.
Despair! Despair! The Dread Crow’s Glare!
If you want to add a "supernatural" touch to your campaign, define the rules of magic and the universe. Make your players comfortable with those rules. Then your new supernatural creatures must then break those rules.