It could be easy if you have a LV100 arceus shiny and when you beat all the elite in Pokemon dimond, pearl or platnium change arceus into fighting type and K.O. Cynthia.(only if you can)
Celestic town
You then have to beat Cynthia
you go to the hall of fame and all the Pokemon in your party get a ribbon that proves you beat Cynthia after that there is a long credit roll
impossible
Catch new legends!
It depends on the Pokemon you have.For me,it could be as easy as beating Cynthia.
Beat the pokemon league Cynthia is the champion
Celestic town
You then have to beat Cynthia
bla bla
you get that AFTER u beat Cynthia.
you go to the hall of fame and all the Pokemon in your party get a ribbon that proves you beat Cynthia after that there is a long credit roll
impossible
After you beat Cynthia the gym leader.
no he does not
Beat the Champion Cynthia
Cynthia is the Champion so you will see her when you beat the Elite Four