Pokémon EX Hidden Legends arrived in 2004 as part of the EX era, a period when the Pokémon Trading Card Game introduced a new generation of cards and mechanics alongside the Game Boy Advance and Ruby and Sapphire video games. Hidden Legends is remembered by many collectors for its holofoil treatments, which gave the set a distinctive look, and for featuring legendary and mythical Pokémon that had been absent from earlier releases. Its cards remain a favorite touchstone for players who came of age with the Hoenn region and the early EX sets. Dark Celebi is a holographic card that reimagines the forest-guardian Pokémon Celebi in a darker, more mysterious light, a variant that stood out to collectors who enjoyed the set's rarer, character-driven designs. Celebi's connection to time travel and its place among the legendary Pokémon give the card a sense of history that resonates with fans. Collectors seek it for its striking foil presentation and for its role as a representative of the set's most memorable cosmic themes.