From Bulbapedia, the community-driven Pokémon encyclopedia.
Psychic Battle (Japanese: 超バトル) is one of the eight sets found in Pokémon Card GB2: Here Comes Team GR! for the Game Boy Color.
The booster pack image features a Mr. Mime.
Club Masters and their Club Members usually give out these booster packs when they are defeated.
Psychic Battle includes cards from Base Set, the Jungle expansion, and Fossil expansion. It also includes a large amount of Vending Machine cards that were never released outside of Japan. Tangela, Ninetales, Flareon, Vaporeon, Jolteon, Pidgeot and Ditto are included as in-game exclusive cards.