u had to have pre-ordered pokemon-collessium
what do you do after you get a mystery gift in emerald?
yes
find it.
you dont
To catch Jirachi you must use an AR.
you cant unless you use action reply
you have to have a chode
i think you can only catch it in Pokemon emerald.
No, not without cheating.
After you catch Rayquaza, you can go back to the Sky Pillar and there is a portal where Rayquaza used to be. Enter it, and you will enter a room and be able to catch Jirachi.
you get jirachi by walking(so its roaming) or use game shark or action replay
No, unless you use cheats or trade it from another game.