Jirachi

Jirachi
Jirachi is a Legendary Pokémon that cannot be seen or obtained during normal gameplay. The only way to get it is to download from A bonus disk that was given out to people who reserved pokemon coliseum for Nintendo Gamecube.

Jirachi has a starring role in the film Jirachi: Wish Maker. Jirachi is the only Pokemon that can use Doom Desire.

Misc. Info
If obtained via Pokémon channel, its OT name will be 'WISHMKR.' Jirachi is the only Pokemon that can use Doom Desire. When you caught it,you will lose all your pokemon party and the pokemon in PC until you release it. But this does not always happen

Learnset
(These are info based on Jirachi in Pokemon Emerald)

-                 Wish                   Normal -               Confusion               Psychic 5                 Rest                  Psychic 10                 Swift                   Normal 15              Helping Hand               Normal 20                Psychic                  Psychic 25                Refresh                  Normal 30                 Rest                  Psychic 35              Double Edge                Normal 40              Future Sight              Psychic 45              Cosmic Power              Psychic 50              Doom Desire                Steel