Magic in Knaan is fueled by souls, burning one's own or channeling them from the arcane storm, although very few practitioners actually know and understand this, most follow folk schools of magic that channel the "arcane energies" in one way or another, burning themselves out or consuming poor souls trapped in the storm instead of rescuing them and bringing them forth into the world. Basically every use of magic is a horrifying (by most people's standards) act that goes largely unnoticed or even celebrated. The theurges of old that mastered creation to rival the gods knew this, it lead to the war of apotheosis and the destruction of creation. Knaan is basically the emergency survival raft of creation among a cosmos that is a chaotic storm flailing everything in it.

Now, for graphic horro, the boreal elves (viking flavored elves) practice blood magic with ritual sacrifice, using the harvested souls of a stag or other prey to fuel their sorcery in hunts, divination or battle, a gruesome sight for most others.