A highly detailed 3D fantasy knight helmet, designed with intricate engravings and ancient runes. The helmet features a dark steel base with glowing blue accents, dragon-scale textures, and a sharp, angular visor. Gothic and medieval influences blended with a touch of high fantasy. The plume is made of ethereal flames or mystical feathers. Designed for a powerful warrior in a mythical realm — cinematic lighting, turntable view, realistic materials, modeled for a AAA fantasy RPG game.