We do have a mechanism for teleportation, but it's not instantaneous. Basically, the character has to actually travel the distance, although they do it at a much quicker speed than a normal human, and then the time it took to travel that far is deleted from everyone's minds to give the illusion of instantaneous teleporting. So, the further the distance, the more time everyone loses. If Xellos believes he is using the Astral Plane, it'll feel like it normally does to him.
no subject
We do have a mechanism for teleportation, but it's not instantaneous. Basically, the character has to actually travel the distance, although they do it at a much quicker speed than a normal human, and then the time it took to travel that far is deleted from everyone's minds to give the illusion of instantaneous teleporting. So, the further the distance, the more time everyone loses. If Xellos believes he is using the Astral Plane, it'll feel like it normally does to him.