Book is about the lost gods and for most of the book you want the gods to come back. Along the way there are reptilian people who are trying to help the gods return and you learn that the gods weren’t nice. In the end, the heroes lose and the gods return, cruelly using their power to suck the life force out of the people, but the people push back and kill or wound the gods.
I remember at the beginning these magicians go into the shop of a clairvoyant. She tells them she knows who they really are after she tells their fortune. That’s the first time we realize there are lizard people. They kill her. It was burned in my head.