EX Deoxys (Japanese: 蒼空の激突Clash of the Blue Sky) is the name given to an expansion of cards and Theme Decks for the Pokémon Trading Card Game. This set centers around the mysterious Pokémon Deoxys and its various formes.
The release of EX Deoxys was delayed to coincide with the release of the movie Destiny Deoxys. Because of this, Nintendo released EX Team Rocket Returnsbefore EX Deoxys, throwing the English sets out of sequence with the Japanese sets and causing the confused set number gap between the two languages. Nintendo would also later do this with EX Legend Maker, albeit due to translation errors.
The set marks the English TCG debut of the final Generation III Pokémon, Deoxys. All Deoxys cards have the Poké-Power Form Change that allows players to switch between its various formes as featured in Pokémon Ruby and Sapphire.
Deoxys cards that portray different formes are still treated as one card, as they share the same name. Forme differences did not bear an effect on the name until Deoxys cards released in Legends Awakened.
The reverse-holographic design for this set features a 'wheel' pattern and the EX Deoxys set logo.
The secret box topper for this set is Rocket's Raikou ex.