Overall, I really liked this story. Initially I was under the impression that the wizard liked who he had become, or rather, how powerful he was. I don't know if it was because of something I missed in the beginning of the story, the narrator (whose did an amazing job), or just my own cynicism, but I was under the impression that the wizard was at least OK with what he had done, because it made him so powerful. In the middle of the story, the wizard's guilt at his atrocities was talked about, and I felt jolted. All of a sudden I had to completely rebuild this character in my head. Maybe I'm the only one that felt that way?
I loved it though. The narration was awesome, and I loved that the treasure came back and got vengeance on the king.