The Physical Universe
The Physical Universe is the reality of mortal beings and the origin of biological life. Its main plane of existence is the Material Plane. The material plane is the whole cosmic system of matter and energy of which Erdos is a part. It has an uncountable number of galaxies.
The material plane has two echoes: the Plane of Shadow (or Shadowfell) and the Plane of Faerie (or Feywild).
The physical universe as a whole is connected to the Fundamental Universe via the Ethereal Plane which overlaps both universes. It is also connected to the Empyreal Universe through the latter’s Astral Plane.
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