you have to get master balls from professor roan
hack the game
use an action replay
your a f***ing f*g for playing that game.
You can get it as a cheat on the action replay card that you get from argos for £14
You can get 99 master balls with no chat on Pokemon gold by beating the elite four 100 times then go in victory road pro oak will battle you then you fly to pewter city and there is a poke ball in front of you click it and you will get 99 master balls
Ok this is called the Pokemon modifier by throwing away the master balls to get the id # of the Pokemon then u have to have a certain amount of other things like 100 if u want it to be lv 100 but you need action replay
Just go on google and look up 999 master balls cheat.
cheats
lots of things like 99 rare candy and 100 master balls people says that it ruins the game :)
Sadly, that is not true.
You can't unless you hack because the only master ball you are supposed to get is from the president of the Silph Co. building in Saffron City. It is a one of a kind ball. Untill about the Diamond and Pearl series.
u cant 1 master ball per game.but you can get a action replay and get over 9000 master balls and 999 stuff