Prompt: geo2099 style, a demon that can manipulate the dreams of its victims and make them experience their worst fears. It has a haunting appearance with elongated limbs and sharp claws, and can teleport and phase through walls. Its signature move is to create an illusion of a horde of demons attacking its victims, causing them to panic and waste ammo. Even the fearless Doomguy would have a hard time dealing with the Nightmare Reaper's mind games and illusions.
Negative prompt: blur haze