Horus vs the Emperor

Epic and highly detailed fantasy artwork depicting a dramatic battle between the Emperor of Mankind and Horus Lupercal. The Emperor, a middle-aged man with a stern expression and long flowing black hair, is clad in ornate, golden power armor with copper accents, wielding a flaming sword. He stands on ornate steps, radiating divine energy. His opponent, Horus Lupercal, whose head is shaved bald, is a darker, imposing warrior in black Terminator power armor with painful facial markings, wielding a power fist on his right hand with claws and a power maul in his left hand. The battle takes place in a grand hall with golden walls, intricate designs, and glowing circular patterns. High-contrast lighting emphasizes the figures and conveys epic scale. Vibrant, stylized fantasy art. Grimdark. Photorealistic. Warhammer 40K.