Legendary ghost knight in a powerful and invincible stance, exuding an aura of unstoppable, brutal force. The composition is epic, with dramatic and gloomy undertones that are emotionally profound, enhanced by volumetric lighting. Intense and brooding dark tones create a haunting impression on the psyche. The digital painting showcases high quality and high-resolution details, capturing the essence of an immortal warrior. Remove elements like plastic textures and avoid poor anatomy or unintended duplications. Focus on maintaining the artwork's integrity without any text, names, signatures, watermarks, or artifacts to preserve its visual perfection.