It's a neat concept. Take Robin Hood, put him in a fantasy setting, and start incorporating other legendary characters like King Arthur and Blackbeard into the same world.

I found the execution wanting. I felt the pacing really slowed me down and only being on a plane with nothing else to read could dedicate my attention to it. The dialogue at times felt jarring and unnatural, or like the author didn't trust the reader to understand what was going on and then made a joke about it. Spelling errors didn't help either. The first person perspective switching between different characters threw me for a loop too. He fridges the main character's romantic interest, I felt the characterizations were inconsistent towards the end, and he didn't wrap up the ending with any sort of explanations regarding these questionable character actions.

The magic system is really neat, and it was fun trying to guess who each of the characters were based on.