A dark fantasy painting depicting the grim reaper clad in full plate armor, engaging in battle while wielding an oversized scythe forged from bones and adorned with skulls, set in a gritty dark fantasy cityscape teeming with bones and skeletons. The reaper, shrouded in a black hooded cloak with intricate gold trim, wears a menacing skull mask. The atmospheric chaos of the decaying city, with its haunting structures and dimly lit alleyways, complements the reaper's ominous and formidable presence. The scene captures the essence of an eternal struggle between life and death within this shadowy, bone-filled realm.