creepy masterpiece manga-style scene by Tsutomu Nihei, WH40k adeptus_Mechanicus machine-priest of mars, surrounded by circle of arcane symbols, symmetrical, geometrical, orange-red_robes,  dark dystopian scifi, strange but beautiful sci-fi, otherworldly, wild and untamed, highly detailed, strong contrast,  otherworldly, intricately detailed scribbled sketch style, dark cross-hatched shadows, black-and-white, muted colors