Create a character design of a void arcanist engulfed in swirling mist, rendered in photorealistic detail. The scene is crafted using octane render and unreal engine for hyper-realistic textures and lifelike appearance. The environment is illuminated with volumetric lighting, casting ethereal rays through the mist with high dynamic range (HDR) for vivid contrast and depth. The character, draped in dark, flowing robes, stands in an enigmatic pose, as glowing runes hover above their outstretched hand, casting subtle reflections on their face. Aspect ratio is 9:16 for an elongated, cinematic effect.