How do you get a master ball in sapphire?
Well I've done this before, you go to mauville city and then talk to all the people there but you have to find a secret person he is dressed as a ninja he is in the Pokemon center. you click AAXXBBYY (if you have a d.s.) left right and he'll appear then he'll ask you if you want a master ball then you have to battlle him. I promise you you'll win. Then you'll get it.
You find the master ball in the center of Team aqua's lilycove hideout with 4 other balls 2 of them happen to be level 30 electrobes. In order to get a master ball, you have to get through the team Aqua hideout. In one room, there are 4 balls. 2 of the balls are Electrodes, one is a nugget and the other one is the master ball.
At Team Aqua's base to the left of Lilycove, keep going on the teleportors until you get to the room with 4 pokeballs, two electrode at the front and a nugget along with the master ball Emerald is Almost Identical to sapphire, so if you have played Sapphire, you would know, if you don't get the guide! This answer sucks that doesn't help anyone. You just ask for a master ball from a professor. In…