Cosmic Eclipse arrived in 2019 as one of the final sets of the Sun & Moon era, capturing the waning days before Sword & Shield's release. The set explored the mythical origins of Pokémon through Cosmog and its legendary evolutions, delivering compelling artwork and mechanics that resonated with collectors seeking the era's deeper lore and visual storytelling. Cosmog, the ethereal nebula Pokémon, represents transformation and cosmic mystery—a creature that evolves into legendary titans. The reverse holo treatment brings shimmer to this delicate, otherworldly design, making it particularly appealing to collectors drawn to celestial imagery and formative evolutionary lines. It remains a centerpiece for those building complete cosmic-themed collections.