I read another book by one of my favourite authors, though I would probably refer to this as more of a novella than a book.
Once again, Sanderson proves to be the master of magic systems, the depth and detail that he puts into making and developping them is extraordinary, and even more so when you take into account that the systems themselves are so original, I have never read anything with a magic system similar to one of Sanderson's creations.
The fact that this book is so readable is a real credit to him, especially as the vast majority of it is set in one room, and that there are actually very few characters in the plot, and even fewer that actually play an active role.
For a quick read, definately give it a go! Sanderson once more remains unbeaten for magic systems!