Saga of the Dragon Cult (Mavrickindigo)
The Cursed Cat Mage
Marcylla was a normal catfolk, when she saw a beggar asking for food one day. She gave him some food, and he revealed himself to be Mysterious Mage. He then cursed Marcylla to become human, which removed much of her natural talents, but caused her sorcerer powers to be honed to a point where she could use them more properly.