Divine misfortune - A. Lee Martinez

Like many people in this world, Phil and Terry are just looking for their personal slice of divine assistance. It's not their fault that they decide to settle on Lucky, a raccoon god of good fortune. At first, everything seems to be working fine.
But they will soon learn that the world of divine powers is not to be entered into casually.

Lucky, it seems, had a falling out with another ancient god long ago. And while Lucky has moved on with his life, the ancient twisted deity is still nursing a grudge. Add to this a scorned goddess looking for revenge and it starts to become clear that Phil and Terry may have taken on more than they ever bargained for.