Your choice. The devs all ready have your money. You do realize that the devs are staying very close to Norse mythology right? Wizards are mentioned in Lokasenna (part of the poetic edda). Galdr was witchcraft, sorcery, and the magic arts. Seiðr was spirit journeys, magical healing, and divination.

You've even been using magic this entire time without realizing it. Ever since you used your first minor healing or stamina mead, summoned your first boss, or used your first forsaken power.

It can all be found in some part of Norse legend or as part of some Norse paganism.