When you sleep, your soul briefly returns to the place where it was created/goes to when it dies, and seeks nourishment. Everybody's soul is created with a little link (or you could say a greater entity calls it back) to that place so that it can return easily, but upon death, the soul returns via that and annihilates the link as if returns.
Also, as an added thingy, you could say the entity supplying the link, or residue of the links themselves, (whichever) is the source of all arcane power.
On route from Geli to Nekrass the characters meet a peasant boy on the road. He's wandering in the direction from which they've just come. If this seems a little bit incongruous, they may wish to ask him a few questions. He's perfectly willing to talk: he's called Lamish and he's run away because he knows he is the heir to the throne of Geli and his parents didn't believe him. How far is his home? About five weeks walk from here. How much has he eaten? Nothing. Has he drunk? Only from the filthy roadside ditches. In short, it's a wonder he is still alive. And yet he seems perfectly healthy.
Is he a thief, waiting for travellers to trick? Is he lying because there's something more sinister under all of this? Is he telling the truth? And anyway, what should the characters do? Do you take him to Geli? Do you try to find his parents? Or leave him to make his own way?