try going in the elite four with Pokemon lv. 60-100....
Anywhere
snow point city
you get it after you beat the elite 4 go to the desert and catch one.
You can go to Battle Zone or try to catch all the available Pokemon
you have to beat the elite 4 and go back to turn back cave where giritina is in Pokemon diamond or pearl. and its next to a portal. you have to beat the elite 4 and go back to turn back cave where giritina is in Pokemon diamond or pearl. and its next to a portal. you have to beat the elite 4 and go back to turn back cave where giritina is in Pokemon diamond or pearl. and its next to a portal.
You go on to battle the champion Cynthia.
Go there after beating the Elite Four. The ship is in Snowpoinnt City.
you need the azure flute given from an event when you have it after bearing the elite four go to spear pillar use it and it should come
you go to the Pokemon center in hearthome city and talk to nurse joy after you've beaten the elite four
all you have to do is beat elite four
you go battle bertha the second elite four member.
see all the Pokemon in sinnoh region go to pro birch and he will give you national dex