Generate a highly detailed, 16k octane render of a Celtic Guardian on an Altar of the Bound Deity background, incorporating elements of lucha libre and 70s design. The full- body portrait should feature a small beard, brown resin details, and high contrast metal accents. The image should adhere to the golden ratio and have a centered composition. Incorporate references to Art Nouveau and the styles of Steve Argyle, Giorgio de Chirico, and Lau. The atmosphere should be grim yet sparkling with cinematic lighting. Ensure the image is ultra- realistic with intricate details, vibrant colors, and a high level of texture. The final output should be 8k resolution with a Kodak film stock aesthetic. Apply post- processing techniques to achieve a masterpiece- level image trending on Artstation
