I enjoyed this book and the characters were great, especially The Feisty Five. I was also fascinated by all the supernatural creatures that were introduced in this book, they were really amazing. The lore was definitely one of the most interesting parts of the book and the world building is solid.
There was some great humor (thought it felt overdone for me at times) and like I said the characters are amazing and I really liked them.
However, I couldn't really connect to the writing and I felt like the plot was dragging a lot, especially in the beginning as there's a lot of info dumps.
All in all, I'm sure that the book will be enjoyable for children who enjoy stories about magic and fantastic beasts.