oscillation

By all means Leo Herron hasn’t had a good life. But when the world changes around him he begins to think he can change that. With magic, zombies, and monsters being born around him will he survive and make a name for himself. No, he dies within the first 10 minutes of the apocalypse but in doing so he unlocks the oscillation system. Allowing him to travel back to save points he sets and change his fate. How will he use this power, you’ll need to read the book to see.