Unsouled, and the Cradle series as a whole, is described as something called martial arts fantasy. The magic system has defined levels of skill, with each skill level gaining distinct abilities and possessing unique attributes. It's not a design that I generally prefer, but it worked well in Unsouled. Which matters, because Unsouled is not necessarily the kind of book that you read for the compelling characters or political drama. You read it for the vivid magical fights.