Magical energies abound in the land around the Pit of Infren and Last Stand. Magical mining towns would abound in this fertile area, if they could survive.
An angel who sacrificed wings to save the world
Who would have thought a key would be this big?
a fur coat with interesting properties and penalties
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.