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Chapter 8: The Age of Lost Omens / The Great Beyond

Inner Sphere

Source Core Rulebook pg. 419 2.0
The core of the multiverse is the Inner Sphere. Here, the vast expanse of the Material Plane and its countless worlds can be found. The Elemental Planes surround the Material Plane like layered shells, with the Plane of Air on the inside, transitioning to the Plane of Water, then to the Plane of Earth, and finally to the Plane of Fire, in something of a reversal of order in which these elements most often appear on habitable planets. The planes of Positive and Negative Energy are also within the Inner Sphere, their opposing nodes of life and death, creation and destruction, light and dark forming the start and the end of all existence.