You can not at all unless you get a special action replay code
cheats
Pokemon lotery and action replay
sorry you cant buy masterballs
you dont buy them u use action replay code
truly the only way is to use AR or if you have a lot of friends that are cool
Nope sorry
you can not get a master ball in Pokemon platinum only the one professor Rowan gives you
cheats
You can't.
Action replay
no
cyrus gives it to you
Yes there is a code for 999 master balls in Pokemon platinum
you have to have Pokemon platinum and a action replay then if u want just give your Pokemon master balls and trade them to games you want to have master balls
Pokemon lotery and action replay
Go to your house and talk to your mum and ask in the microphone can i have master balls. don't listen
Cyrus gives u one