The conclusion of the story of Time Spiral and The Mending. Another enjoyable book in the series although perhaps somewhat unsatisfying if you know more about Magic's history, both before this book and after this book. Having read this more than a decade after the set originally came out it was somewhat unsatisfying reading it because I knew some loose ends wouldn't be tied up here.
I'm going to avoid spoilers but if you've followed the Gatewatch story like many people who've actively played Magic in the past few undoubtedly have, you know some of the conclusions to events in this book. You can probably also surmise several potential interesting threads will be ignored in favor of being picked up later on. That's unsurprising but also unsatisfying.
One thing I will say is that the book did a good job of convincing me to read other Magic books. Taking place on Dominaria with the rifts being the cause of things many years prior you're inevitably given some backstory about earlier events in Magic's history. While the book certainly does try to fill you in on those events it's hard to summarize entire storylines casually into a few pages throughout the book. You get enough that you might want to go find out what truly happened, which to me is quite interesting to think about. I found myself wanting to google some names and events and then having to hold back to avoid spoiling the story (even if I knew what the ultimate conclusion was).
I do think this book might have been a little more enjoyable had I read all of Magic's history up to this point. I know I haven't read anything in the Onslaught cycle, Odyssey, or Invasion cycle, and while I have some knowledge of them I'm not familiar with a good amount of the story. Basically any set that took place on Dominaria had some influence on the story here. I consider that a good thing and I liked that all of that story played a part here. Like I said, it renewed desires I've had to read some of those stories although I know some of them can be quite mediocre. And again, I think it would have been better to have read them prior but I ultimately don't think it's necessary.
If you read this having only looked at Magic's story from the Gatewatch forward then you might not enjoy enough of this book to give it this high of rating. I played briefly during some older sets when I was younger so I have a small amount of nostalgia coming through here. And of course, I've read the entire Artifacts cycle so I know a decent chunk of the story behind this one.
If I had to guess where this book (and really this cycle because all three are the same narrative by the same author), I would say it's below The Brothers' War and The Thran but above the others I've read (Mirrodin and Ravnica cycles and remaining entries in the Artifacts cycle).