The more I hear about this magic system, the more I like it. Very open-ended, yet at the same time bound by the basic rules of existence, making it fundamentally understandable. More or less. Lol. 

Now necromancy has also been mentioned several times but never really clarified, which has gotten me wondering about the nature and existence (or lack thereof) of spirits, ghosts, and wraiths, as well as the nature of necromancy itself. Would the resurrection of a corpse necessitate the returning of the soul to that corpse, or would the corpse simply be a hollow shell following the directives of the necromancer? Or would both options be possible? Regarding spirits, is it possible for souls to linger after death and communicate or interact with the living? Is it possible to bind a spirit to the mortal coil with a spell or accidental outburst of magic?

PS. I apologize for the bad sentence structure. It's getting too late over here for philosophical ramblings...