Another plane of existence the soul connects with primarily while its body is sleeping. Despite being full of dynamic, chaotic energy, upon connection with a soul structured sections come into being the sleeper can then experience a dream in. Regular sleep is critical for a healthy body and soul of sentient beings, for just how rest allows the body to heal, contact with the energies of the dreamscape allow the soul to restore itself from the damages and expenditures of the day.
Magic users of a particular talent can traverse the dreamscape and even enter the dreams of others. That said tracking spells, and most magic in general, has been found to behave differently or not at all within the dreamscape. On top of that dreams are tend to float through the dreamscape unanchored and that physical locations are only loosely connected to locations in the dreamscape. All of this makes traversing the dreamscape with a particular person's dream a very tricky concept.