Re-
Mistborn trilogy. It is quite impressive how each character, the protagonist at the start, the various members of Kelser’s crew, the on-going research by Sazed to reveal a lost history, the role of mists and metal, what these represent, and even how the classes of mythical creatures fit into their cohesive parts of the narrative, and especially the origin of these creatures and how mist and metal is involved from start to finish in not only their existence, but their actions, motivations, and control. And finally the revealed answer as to why this dying world is the way it is Is simply awesome.
If you like this genre of story, it is the best for these reasons: Besides a cohesive and compelling plot, with a bevy of interesting and likable characters, the magic wielded by mortals is not completely vague where anything goes. And although the realm of Gods and supreme but limited power is touched upon, (due to an initially unexplained status quo), instead for mortals and magic, although related to Gods, it is based on metals and is presented as a defined framework of abilities with rules and limitations. You don’t usually see this kind of effort in a story involving magic, where usually it’s power is not as well defined