The Oathnut, also referred to as the warming mushroom, is a truffle and not a nut. It can be found, albeit rarely, in the Mimean and Mineous Forest hundreds in Kanday and even more rarely in other forest regions of Hârn.
Within a half league of Burzyn are several notable locations. This 12-page article includes history, manor capsules, location details, and adventure hooks, plus three location expansions within Burzyn.