now press r,r,r,r,r,l,l,l,l,l,a,b,up,down,l,r,right,left to get unlimited master balls
you can't
You can trade them from other video games, just make a Pokemon hold one when you trade him or her.
You can't.
You can't!
You go to Eterna Forest after you beat the Pokemon league and go inside the old mansion see the ghost inside leave and go to to any pokemart u will see a dude in green clothes talk to him he will...