digital art, golden horse rearing on its hind legs, black background, intricate gold patterns and textures covering the horse's body, flowing mane and tail with wispy clouds-like designs, highly detailed and shiny, realistic yet stylized, vertical orientation, elegant and majestic, luxurious and opulent feel, high contrast between gold and black, no other objects or people, focus on the horse, fantasy art style, vibrant and eye-catching, symmetrical composition