This was such a great YA fantasy novel. This was a little slow to start, but it ended up being so, so good! Katsa was so stubborn and infuriating sometimes, but she also really cares about people and doing the best for them. Katsa and Prince Po made a wonderful team, and it was fun to see them off on an adventure. I loved the magic system - it was so cool how everyone had a different power/grace (and sometimes, you were wrong about what your grace was). There was also a really interesting villain in the last half.