after you beat Giovanni the second time talk to the man on the couch and he will give you a master ball
Master Ball
use a master ball on it
Only one
Have a friend trade you a Pokemon holding the master ball they received.
No unless you have a game shark
u cant
There is only one
You should get the Master Ball by talking to the President of the Silph Co. in Safron City after you saved him by defeating Giovanni.
Try to get a ultra ball
You can't,you need emerald.
to catch suicune,mewtwo,raikou and entei
You can only receive one master ball in leafgreen version its obtained from the president of Silph co after defeating team rocket and there boss.