Fable 2 Redesign - Project Atlas
Garth was a scholar, scientist and inventor from the upper cardinal district. Unsatisfying with the conservative study at cardinal, he joined Lucien (main antagonist) on expedition for further research. They found an artifact called "Spire", which retains high magical energy. Lucien exploited the power and let the spire taking over his entire body. Garth realize Lucien's ambition and cease to help him.
With half of his body taken by the spire, Garth is still able to utilize the magic power within. He's able to summon spiritual creatures to help him in battle. The spire power can be unstable, he invented a tool on his leg to seal, and release when it's needed.
The 3rd hero your main character meets, at this point you can learn to summon familiars and conduct magic attacks.