Nightmares From the Gray - Joey Powell

When a life-threatening accident renders sixteen-year-old Ronnie Hendrix comatose, he dreams of his hometown in flames and a giant axe at the center of it. After he recovers, Ronnie, sick and tired of being bullied, begins writing in a notebook, detailing the ritualistic deaths of those responsible for his accident. In the notebook, their sacrifices lead to the ceremonial summoning of Karnalaxe, a demon large enough to wield the weapon from his nightmare.