The Echoes of Eternity are mystical crystals that float serenely in the air, emitting a radiant and ethereal glow. Each crystal is uniquely shaped and colored, with intricate patterns of light swirling around them. The largest crystal, a brilliant azure, is surrounded by smaller crystals of various hues--emerald, ruby, and amethyst. They are suspended in a magical nexus where time and space seem to intertwine, with shimmering trails of energy connecting them. The background reveals a cosmic landscape, blending elements of Aetheria’s vibrant daylight and Nocturna’s twilight shadows. The scene exudes a sense of ancient power and timeless balance, capturing the mystical and otherworldly nature of these powerful artifacts.