extremely detailed intricate concept art of hooded necromancer in front of a lovecraft portal by marc simonetti and mike mignola and beksinski and giger and alton kelley, rising from the void, dark neon retro wave, purple fog, volumetric mist, golden and mysterious, stopped in time, atmospheric, ominous, eerie, cinematic, epic, 8k, 4k, ultra detail, ultra realistic, unreal engine, octane render, vivid colors