It's a bridge novel, transitioning the plot from the events of the first 2 novels to the future events of the eventual fourth (and more?) book. There's more of the same but some additional elements are added in across the 3 or 4 locales we see in Legends of Ahn. The scope of the worldbuilding is increased greatly with the addition of magical and mythological creatures in the Kade's world. This is something I was waiting for actually, considering the magic system. It's an abrupt introduction but it works well enough in the setting and provides the support the backbone of the plot for this novel.
What is perhaps the best aspect of this novel is Rezkin's struggle. If you've read the first 2 books you know he suffers from the condition of perfection. He is so highly skilled and perfected that few things ever challenge him. The events of the first 2 novels are finally having a burden on Rez. The character is some more human development, struggling with personal relationships in more direct ways and facing questions of morality. There are some excellent moments for his character, both as an individual and as part of the larger cast that are beginning to give him some deeper, more faceted characterization. It is very welcome and I am enjoying the plot finally having a proper impact.
In short, this novel is largely about transitioning the characters through the limbo they find themselves in before the plot can pick back up again to the action and movement we have seen in the previous novels. Some readers will find it slow, others will find it to be a good lull in the action (though there is still plenty going on with regards to larger political and geographic settings). Its a solid addition to the series and I'm looking forward to more.