The plane of ‘Ancoria’, as imagined by its creator. There’s a section listing the basic characteristics of each of the known planes of Superliga, suggestions for making yet more planes (I’m still ardently committed to the idea that somewhere out there, there’s an Overseer who only reads these so they can make a primal grunt of dismissal before penning their own works of creative genius)
There are also some basic plot hooks for each of the major locations in Superliga and even sample adventures and encounters. I mean
like... wow, guys. Just wow. There’s so much stuff in here.