Time to talk about World Tuners.

World Tuners are one of the most advanced essence devices, capable of ripping through space to create portals. They work thanks to powerful Delthulian essence locked within the Tuner, hence why they are extremely rare and pretty much are owned all by gods. Once they are inserted to a World Portal, they can open a walkway to another place entirely, specifically another World Portal that was linked to it by vague means.
The Exiles on their journey will need a Tuner for their final destination, Valksung itself. How they get this is still being planned, but I have a few ideas already…

An image of the one and only World Tuner that specifically opens portals to Valksung: