Maegon
They might have been able to hack some of the old migratory gates. Or stole technology from the factions, in which case I think they'll retaliate. I for one am also very curious about the maraduer teleport system seeming as Riku said that the marauders are not against the factions but the races. I feel it would be rather unfair to allow them to have a second form of transportation. Might upset some people if it is implemented in a certain way or the way it seems.