Circle of Self

(This spell can only be cast from the Astral Plane)

While in the Astral Plane, you generate a circle that is perpendicular to your feet. The circle appears as a shimmering disturbance of space and grows for 4 hours until it stabilizes. When the circle is complete, it creates a circular astral space devised around your existence in the Astral Plane that is under your control. You can recast this ritual spell again when in the Astral Plane to create another circle above any previous ones, with 1 hour added to the stabilization time per circle already existing. The stabilization time of a circle can be broken up among multiple sessions, but the circle will decay every 8 hours increasing the stabilization time by 1 hour. If enough time passes to be equal to or less than the total amount of time needed to create and stabilize the new circle, the circle dissipates. Each circle has the ability to store magic within it. You can meditate for 1 hour of Prime Material Plan time, in the Astral Plane to store magic generating 1 Sorcery Point per circle. If the magic in the circle or Sorcery Point is expended, you must once again meditate for 1 hour in the Astral Plane to recover the Sorcery Point. 

Once a circle is formed it is permanent but can be destroyed within the Astral Plane. Your Astral Domain being an extension of you is susceptible to Psychic attacks. The Astral Domain acts as the first line of defense for you against entities who use Psychic attacks, allowing each circle to absorb such attacks. After absorbing an attack that circle is destroyed. This means while a circle exists you have immunity to Psychic attacks and/or magic.