Talk to to the person who teaches you to cacth pokemon then fly to cinnibar island put master ball seventh item first do that by going on your master ball and pressing select on it and then press select on your seventh item any way go to cinnibar go to the right in the water and be half in land and half in water you will fight missingo but run away and youll have unlimited master balls. ps;missingo has 785 attack 198 defence 300 speed and will be either level 0 or other level 150 pss;you can cacth it psss;it may bomb game if caught pssss;put it in computer and it will turn into a level 150 rhydon.