Create an image of a dark and desolate battlefield illuminated by violent flashes of dark magic and radiant light. The brave knight, armed with a sword that gleams with a brilliant, holy light, stands resolute and defiant. Opposite the knight is the Malevolent Harbinger, exuding a malevolent presence and wielding dark sorcery. The ground is scorched and littered with the remnants of previous battles. The sky is filled with swirling dark clouds and bolts of lightning. The scene captures the intensity of the epic battle, with the knight's light clashing against the Harbinger's darkness, creating a dramatic and visually striking contrast.