Wake the Dead - Tracy Gregory

Bandit, duelist, hero--Jack had been many things in his life. When failure to stop a crazed cultist allowed eldritch nightmares to attack his home, Jack escaped with as many people as he could save, even though it meant leaving a friend. Now Jack’s come back to right that wrong and find out what happened to his home, a place where warlords, monsters, and cosmic terrors now battle for dominance. Thrown into a post-apocalyptic kingdom he blames himself for creating, Jack will come face-to-face with true darkness. To survive, Jack will need to increase his level and master the magical deck of cards that grant him his powers. New allies and new adventures await in the ruins of the ancient city.