There are eight Transitory Planes that are used to travel between Planets on the Celestial Plane. These Planes have certain similarities to each other but are also individually distinct. Each Transitory Plane has the same general layout in terms of its size, shape, and the placement of certain types of regions (such as the Core,) but beyond these things, every Transitory Plane has many unique features not found on the other seven Planes. In other words, the Transitory Planes reflect each other but the reflections are always altered in different ways that are in line with the nature of a particular Plane.