The Legendary Cards or Legendary Pokémon Cards[1] are cards from Pokémon Trading Card Game and Pokémon Trading Card Game 2: The Invasion of Team GR! that were mostly guarded by the Grand Masters. The cards are apparently very rare and powerful, representing the legendary birds as well as Dragonite, who was then the only Pseudo-legendary Pokémon.
If the player wants to earn these cards, they, in a similar style to the Pokémon League, must defeat the eight Club Masters to obtain their respective Master Medals. After this, the player is able to enter the Pokémon Dome, where the four Grand Masters must be defeated. It is possible to defeat them multiple times, to obtain multiple copies of the cards.
Only one of the Legendary Cards had been released into an actual card - in the packaging of the Pokémon Trading Card Game, which is for Japanese version only. This card is the Legendary Dragonite. The other three Legendary Cards in the game cannot be reproduced faithfully for the TCG, as their card effects involve the CPU choosing a Pokémon at random to be affected.