Yuusha Party o Tsuiho Sareta Shiro Madoshi

A humble adventurer is kicked out of the heroes party. This could have been just another cliche, but the back story helps it stand on its own.

Lloyd is an orphan of unknown origin. He was raised by a reclusive witch, who is the most powerful magician in the world. While training and educating Lloyd, she was a harsh taskmaster. Lloyd is humble because in his experience, he is vastly inferior to his master in power and knowledge. What he doesn't realize is he is more skilled and powerful other magicians.

The story has a well constructed plot and will hold your interest as events progress and connect together. The animation is good. I do wish it had an English dub.