A photorealistic depiction of a void arcanist cloaked in swirling mist, their form shrouded in shadows and mystery, illuminated by ethereal, volumetric lighting that casts an otherworldly glow. The character’s intricately detailed robes are adorned with arcane symbols that shimmer with a faint, iridescent light, hinting at the immense power they wield. The scene is rendered with hyper-realistic detail using Octane Render and Unreal Engine, capturing every nuance of texture and light. The background is a dark, infinite void, enhancing the arcanist's enigmatic presence, while HDR lighting accentuates the depth and contrast of the scene, adding a striking, cinematic flair. This intricate design combines elements of fantasy and mystique, drawing the viewer into a realm where reality and the arcane seamlessly intertwine, all within an aspect ratio of 9:16.