Generates a picture showing King Arthur in his prime. King Arthur is a handsome young man wearing simple cloth armor, with long tawny hair, holding the hilt of the sword with both hands, and looking confident. A mysterious amount of holy light is emitted around the sword. The sword is facing upward and is 1.5 meters long. The setting should be an ancient medieval forest or wilderness, surrounded by a mysterious atmosphere. The overall tone of the picture is sacred and solemn, highlighting the arrangement of fate and the symbol of royal power.