you cant
You cant you only get one ( without action replay )
you can't
give one to a Pokemon and trade the Pokemon with the master ball.
You cannot get that many master balls without an Action Replay. You are only allowed one per game.
in every pokemon game you get one master ball before the leauge
$#@! no
You can't.
You can't.
The GTS cloning glitch.
Give your Master Ball to a Pokemon to hold, then clone it in Emerald with the cloning glitch.
u get it off a man in the bilding
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