Sea of Dreams
Traveling the Lanes requires both a special Helm and a suitably trained Pilot. These helms are what make Spelljammers unique compared to other similar vessels and airships. The Lanes themselves are preexisting pathways through the magical energies that permeates the Void. As a result, they do not always allow direct flight from one world to the next and this hopping between worlds leaves a great deal of risk in any interstellar journey.