Feast of Souls- Good little fantasy book, had a hard time putting it down once I got into it. It's a book which is more about intriguing concepts than it is necessarily about the execution. The magic system's core ideas are really interesting in particular, and some good things were done with it, though I was left wanting a bit more (the stated reason for there being few/no female magisters is a bit hard to swallow) and can think of several issues related to it which the book surprisingly didn't tackle, though it could come up in the sequels. In general I enjoyed Kamala(/Ethanus) chapters a lot (they tie in most strongly with the morality of the magic system, plus I love "tangled ball of rage and emotion" characters), enjoyed the Colivar and Andovan chapters quite a bit, and was a bit lukewarm on the Gwynofar ones though they had their moments; they mostly suffer from Kostas being a shockingly dull (and obvious) villain after a good first scene. Otherwise most of the key characters were quite grey which is nice.
One minor complaint is that while the story is mostly written in third-person limited, it sometimes slips into omniscient with little warning and the scenes where it happens feel confusing as a result, and I'm not sure how much this is intended.
Totally random minor note but I was amused that after several characters describe him offscreen as a useless, arrogant, fop of a prince, Rurick ends up being kinda badass.