Create a breathtaking, otherworldly depiction of a majestic phoenix in its full glory, set against a surreal backdrop of a mythical landscape. The phoenix should radiate vibrant, iridescent flames, each feather adorned with intricate patterns resembling ancient symbols. The scene should be rendered in 8k resolution, capturing every minute detail and the ethereal play of colors in the phoenix's plumage. Emphasize the phoenix's regal and powerful presence as it soars gracefully through the heavens, with its wings outstretched and fiery tail trailing behind. The overall composition should convey a sense of awe-inspiring beauty, capturing the essence of rebirth and resurrection that the phoenix symbolizes. Utilize hyperrealistic techniques to bring out the phoenix's exquisite features and intricate plumage patterns, making this artwork a true testament to the mythical and timeless nature of this legendary creature.