grimdark cinematic vertical cover art, a space marine inspired by Relictors chapter, kneeling slightly forward in a devastated battlefield, low angle dramatic perspective, ultra-detailed power armor with battle damage, ominous atmosphere, holding a massive cursed warp blade of Tzeentch, the sword is the main focal point, glowing with toxic warp energy, fractal energy cracks, reality distortion around the blade, green and violet warp light illuminating the scene, dark tyranid silhouettes in the foggy background, war-torn landscape, ash and debris floating in the air, strong contrast lighting, single intense light source from the cursed weapon, cinematic depth of field, extreme foreground focus on blade, face partially shadowed but visible, intense heroic grimdark mood, ultra sharp, high detail, 4k, film still, volumetric lighting, dramatic composition, rule of thirds, viral youtube thumbnail composition, high readability, strong silhouette separation
