The value
- EX (capital, Black & White)
Where it comes from
The line in the source
a new type of card, the Pokémon-EX card was introduced (with Shaymin-EX, Reshiram-EX, Kyurem-EX, Zekrom-EX, Mewtwo-EX, and Regigigas-EX)
In English
Next Destinies (EN 2012-02-08, 99/103).