There is one in team aqua's base, also you can win multiple master balls by winning the lottery at the lilycove dept store. Need to have lots of ID numbers to win. Best advice trade with alot of people.
You can only get one or use cheat
There is no unlimited Master Balls cheat, but maybe you're talking about using an ActionReplay/GameShark. I wouldn't know about those. There is a way to duplicate Master Balls though, but that is only available in Emerald Version.
you have to clone from emerald (GBA) then make a Pokemon hold it migrate it and walla!
no
From the store
action replay
get the first master ball from aqua's hideout outside of lilycove.. and then use the "cloning" glitch available in any emerald version :)
you can use a game shark to get unlimited master balls
Master Code: D8BAE4D9 4864DCE5 Buy Master Balls Code: 82005274 0001
No. However, you can clone a Master Ball on Emerald. There are also codes to get multiple Master Balls.
1
You don't.