Dream Travel

Dream travel is a ability which allows people to transport themselves through the dream world to another physical location. Anton is very skilled at this, able to do it at-will anytime. Others have different degrees of ability. 
Harris is able to dream travel only in emergencies.
In D'Zeron one must have this capacity to become a dream keeper because the place where the ancients live can only be accessed through dream travel. It might b e the case that some of the dream keepers develop only the ability to transport to that place. 
Serai becomes a dream keeper by dream traveling into the Temple of D'Zeron to be with Jason while the temple is sealed at night. 
Jason and Serai's wedding takes place in a dream space and Emily Scott-Harris, who is a Chosen one [As an unchosen one she lived on HomeWorld] was conceived in the dream world. this transporting of her spirit would also have been a form of Dream travel.