Why Holon Phantoms matters
Holon Phantoms landed in May 2006 as the thirteenth English EX-series set, part of the run of expansions built around the fictional Holon region and its signature Delta Species mechanic. Delta Species Pokémon wore off-type energy — a Metal Rayquaza, a Fighting Gyarados, a Psychic Mewtwo — and the whole set leans into that visual novelty. The card faces are printed with the delta symbol beside the name, and for collectors the appeal is exactly that: familiar Pokémon rendered in colors and typings they were never supposed to have.
The set's gravity comes almost entirely from its Gold Stars. Mewtwo ★ and Pikachu ★ are two of the most recognizable Rare Holo Star cards in the entire EX era, and Gyarados ★ is a Delta Species Gold Star that pairs a beloved Pokémon with the set's headline gimmick. These are the cards people actually remember Holon Phantoms for, and they sit at the top of the value stack by a wide margin. Behind them, Mew ex anchors the ex tier and a secret Mew (#111) closes out the numbered run past the printed 110.
Reputation-wise, Holon Phantoms is a classic EX-era set: dense with Delta Species Rares and Holos, a manageable printed count, but a brutal top end. The Gold Stars were rare pulls when the set was live and they've only gotten harder to find in clean condition since. Collectors love the set for its concept and its icons, but everyone who chases it knows going in that the finish line is defined by three or four cards, not a hundred.
For a modern collector, this is a set you appreciate for its art-history value — the Delta Species era is one of the more experimental design periods in the game's history — and for the Gold Star trophy pieces that headline it.




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