Pokémon TCG · 2004 Set Guide
Hidden Legends Set Guide
Groudon ex and Kyogre ex, the three legendary golems as Pokémon-ex, and Stadiums built around Hoenn's ancient ruins.
Overview
Hidden Legends came out on June 1, 2004, with 102 cards: 93 Pokémon and 9 Trainers. Its nine Pokémon-ex include Groudon ex and Kyogre ex, which stop each other from attacking, and Regice ex, Regirock ex and Registeel ex.
Its Trainers lean on the ruins theme: Ancient Technical Machines for each Regi's type, and four Stadiums, Ancient Tomb, Desert Ruins, Island Cave and Magnetic Storm. The printed total is 101, and a secret Groudon is numbered 102.
Cards and rarities
Hidden Legends has 102 cards. Every card shows its number over the printed total along the bottom, as in "4/101". The cards print a set symbol, not a set code; the code here is the short one the catalog and TurnZero HQ file the set under.
The printed total is 101, so Groudon, 102/101, is the one secret rare. Set completion in TurnZero HQ counts a set against its printed total and keeps the secret rares apart, so finishing the main set and chasing the cards above it read as two separate goals. How set completion works →
Headline Pokémon
The two box legendaries and a Regi:
Groudon ex
Hidden Legends #93
Mark of Antiquity stops each player's Kyogre ex and Rayquaza ex attacking while it is Active; Crushing Mantle adds 10 for each Energy discarded from your hand.
Kyogre ex
Hidden Legends #94
Mark of Antiquity, the other way round; Super Tidal Wave adds 10 for each Energy card in your hand.
Regice ex
Hidden Legends #97
Crystal Body prevents every effect of attacks on it except damage; Freeze Lock may stop Energy attachments.
Trainers worth knowing
A Supporter and a Stadium:
The chase card: Groudon ex
Hidden Legends' chase card is Groudon ex, 93/101, illustrated by Hikaru Koike, at $330.33 on October 22, 2026.
The list is close at the top: Ninetales ex ($314.00), Regice ex ($303.75) and Registeel ex ($300.50) are within $30 of it. The secret Groudon, 102/101, was $114.93.
Groudon is printed twice in the set: as Groudon ex and as the secret rare.
Only the exact version is worth its price. The number at the bottom of the card and the rarity symbol beside it tell you which one you pulled. Reading the number and rarity symbol →
Chase cards and prices
All six are Pokémon-ex, priced as holofoil copies.
| Card | Rarity | Market price, October 22, 2026 |
|---|---|---|
| Groudon ex | Rare Holo EX | $330.33 |
| Ninetales ex | Rare Holo EX | $314.00 |
| Regice ex | Rare Holo EX | $303.75 |
| Registeel ex | Rare Holo EX | $300.50 |
| Kyogre ex | Rare Holo EX | $250.00 |
| Regirock ex | Rare Holo EX | $227.98 |
These are each card's headline TCGplayer market price on October 22, 2026. Prices can move a long way, most of all in a set's first months, so treat them as a snapshot. Each card's page shows today's price for every variant and its 90-day chart. How Pokémon card prices work →
What a complete set costs
One copy of every card in Hidden Legends, bought as singles, cost $3,143.71 on October 22, 2026. That is the 13th most expensive of the sixteen sets in the EX series.
The three most valuable cards, Groudon ex, Ninetales ex and Regice ex, come to $948.08, or 30% of the total. Without them the set costs $2,195.63. Of the 102 cards, 46 were under $2.00, together $36.47; the other 56 add up to $3,107.24.
Each card is counted at its cheapest priced variant, usually a Normal copy rather than a Reverse Holofoil, or a stamped promo copy where the catalog prices one lower, at its TCGplayer market price. This is what it costs to buy the set as singles. It is not what opening packs returns, and not what a complete set would sell for, which after fees and the many cards worth cents would be noticeably less.
Playing it
The catalog marks every card in Hidden Legends as legal in neither Standard nor Expanded, the two formats Play! Pokémon sanctions. Expanded starts with the Black & White series in 2011.
Frequently Asked Questions
When did Hidden Legends release?
June 1, 2004. It was the fifth set of the EX series.
How many cards are in Hidden Legends?
102. The printed total is 101, and Groudon is numbered 102/101.
What is the most valuable Hidden Legends card?
Groudon ex (93/101), at $330.33 on October 22, 2026, narrowly ahead of Ninetales ex at $314.00. Prices move daily, so check each card's page.
Can Groudon ex and Kyogre ex be played together?
Yes, but while either is your Active Pokémon, its Mark of Antiquity stops each player's copy of the other, and Rayquaza ex, from attacking.
Track your Hidden Legends cards.
Add your cards to your collection, see how much of the set you own, and value every copy from daily TCGplayer prices. Free to start.
Create Free AccountPokémon and Pokémon character names are trademarks of Nintendo. ©Pokémon. ©Nintendo/Creatures Inc./GAME FREAK inc. TurnZero HQ is not affiliated with, sponsored, or endorsed by Nintendo, The Pokémon Company, Creatures Inc., or GAME FREAK inc. Card data comes from the open PokemonTCG dataset, and prices from TCGplayer.