Create a superhero inspired by Nyx, the Greek goddess of the night. Visualize her as a modern guardian of dreams, ensuring peaceful slumbers in a restless world. Her attire should ripple with the vastness of the night sky, adorned with symbols of stars and veils. Eyes should radiate mystery and serenity. Accessories might include a cloak that envelops in comforting darkness or a pendant that wards off nightmares. Embrace a palette of midnight blacks, starlit silvers, and dreamy purples. Capture the essence of a protector ensuring rest and rejuvenation in the chaos of modern life.