This question contains spoilers…
(view spoiler)[Really disappointing! This is the 4th book of this series. I have thoroughly enjoyed all of them. My problem is that the book didn't end! It was like a set up for a sequel, which has NEVER been necessary before. VERY upsetting!!! Who is the Enchanter Heir? (hide spoiler)]
S Agarwal Jonah, because 1. He is the main character and 2. He is the only enchanter wh actually participates in any part of the book because the only other enchanter is Linda Downey.