This code will put 493 Master Ball's in the first spot of your bag. In order for the code to work you will have to press L+R buttons to activate the ball's first. Then if you want any Poke'mon all you have to do is toss away the Master Ball's. But which ever Poke'mon you choose to catch you will have to press the L button and then walk around in the grass until that Poke'mon shows up. But don't be discouraged if it don't work the first time just hit the L button again and then walk around again. But everytime you catch the Poke'mon that you choose you will have to repeat the same steps in the same order for more Poke'mon that you want. EXAMPLE: If you want Arceus just do the first step but don't throw away any of the balls. Just press the L button before you walk around in the grass and then TA-DA a Arceus will appear. But if you want any of the other Poke'mon start tossing away the balls. EXAMPLE #2: If you want a Shaymin toss 1 of the Master Balls away. But it was confusing for me the first time so here's a chart that will help.