DNF around 130 pages. 
 This book was EXTREMELY slow to start, and it didn't seem to be picking up even after I made it more than 100 pages in. The story starts with too many chapters of unnecessary exposition and it was incredibly dull. There were some interesting ideas that seemed promising at the very beginning: an oracle on each planet, some kind of deadly magical flower, interplanetary politics, etc. Unfortunately, none of this was executed in well-developed or interesting way, the characters were flat, and the plot (at least in the first quarter of the book) was nonexistent. 
 Also: When Cyra and Akos meet up again after they've both come into their powers, I started feeling some weird deja vu. It took me a minute to realize that their powers are essentially the same as Juliette and Adam in Shatter Me. I really enjoyed Shatter Me, so I started to wonder if maybe Carve the Mark would improve, but the further I got the less likely that seemed. Shatter Me is set in a dystopian military state, and it has very little worldbuilding, but it worked for me because I enjoyed the relationships between the characters. It doesn't pretend to be more than it is. 
 Carve the Mark--at least from what I saw before reading it--has been marketed as an epic, action-packed story of war in outer space. That is absolutely not what this book is. I don't even have anything to say about the characters, they were so flat and unremarkable. The science-y stuff felt like it was trying too hard to sound legit and made very little sense. As far as I could tell, the first 130 pages had no consistent plot to speak of. 
 I've read other reviews criticizing this book for its portrayal of self-harm and chronic pain. I don't think I got far enough into the book to really get a sense for how those subjects were treated, but if you're sensitive to those subjects I would recommend looking at some of the other reviews on here before deciding to read. 
 This is not the worst book I've ever read, but there's also nothing particularly good about it. All I can really say for sure is that it was boring as hell.