The values
- 1997: わるいポケモン (Dark) in Rocket Gang set (4th expansion)
- 1998: Gym Leader cards
- 2000: ひかるポケモン (shiny Pokémon) cards
- 2001: e-series playable via e-Reader
- 2003: ポケモンex (2 prizes when KO'd)
- 2005: δ (delta species)
Some detail is too fine to show here; it is kept in the trainer’s notes.
Where it comes from
The line in the source
2003 倒されると2枚サイドをとられるかわりに強い、「ポケモンex」のカードが登場した。 [EN: 2003: Pokémon-ex cards appeared; 2 prizes when KO'd but strong]