retro style space monster traveling through space long tentacles big black with white tentacles Planets in the background digital painting, artstation, concept art, soft light, hdri, smooth, sharp focus, illustration, fantasy, intricate, elegant, highly detailed, D&D, matte painting, in the style of Greg Rutkowski and Alphonse Mucha and artemisia, 8k, highly detailed, jurgens, rutkowski, bouguereau, pastoral, rustic, georgic