a dark fantasy painting depicting the grim reaper clad in full plate armor, wielding a massive scythe intricately crafted from bones and skulls, in an epic battle. the setting is an ancient city shrouded in shadows, littered with bones and skeletons, creating a haunting atmosphere. the reaper wears a tattered black hooded cloak with elegant gold trim and a menacing skull mask. the scene exudes a gritty, otherworldly aura, accentuated with deep shadows and hints of supernatural energy, capturing the essence of a mystical, dark fantasy world.