From Bulbapedia, the community-driven Pokémon encyclopedia.
Ralts has been featured on 17 different cards since it debuted in the EX Ruby & Sapphire expansion of the Pokémon Trading Card Game. Ralts cards are normally Psychic-type or Fairy-type Basic Pokémon. In Spain, Ralts was featured in the Ralts Picture Book Half Deck released in late 2006.
List of Pokémon cards featuring Ralts