Mystery Gift, in Pok?mon RS called Mystery Event, can be activated in the following way :
1. Collect at least five badges by defeating five different Gym Leaders.
2. Go to the Pok?Center in Petalburg City.
3. Talk to the man standing next to the computer.
4. When he asks you if you'd like to make a new profile, answer " Yes. ".
5. Change the four words displayed to read "MYSTERY EVENT IS EXCITING". Select "OK."
6. When asked if profile is "OK", choose "YES."
7. You can now ' Mystery Gift '.
8. Save your game and turn off the power.
9. Turn it back on and you'll see the option " Mystery Event " appear.
You can't really use it with friends (in contrary with Pok?mon GSC), but it is only useful when entering a Nintendo Event.
Where and when a Nintendo Event will take place appears on the following website (in the News - section) :http://www.pokemon.com
You need the Adobe Flash Player to view the website. You can download the Player on the following webpage :http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFl...
A Nintendo Event is only held occasionaly.
A Nintendo Event is an Event that is organised by Nintendo and where items such as the Eon Ticket, are obtainable through Mystery Gifting. A special machine on that Event will ' Mystery Gift ' you the Ticket(s).
Good luck and have fun! :)