The Astral plane is a limitless metaphysical plane.
It borders the domain of Nightmare.
The Astral Plane acts as a locus and connects every minds
Contains thought-forms and is the lower realm of the unconscious.
It is a place beyong space and time and possibilities there are only limited by imagination.
Concepts such as mathematics, emotions, stories, etc. can be manipulated and used in the Astral Plane.
Whole realities can be made inside the Astral Plane.
