Instructions
Enter any Pokemon Center and walk up the stairs leading to the second floor.
Talk to the woman on the far right to browse the Wi-Fi options for "Pokemon Black" or "Pokemon White."
Select the "Random Matchup" option to connect to the local Wi-Fi signal and make a personal Pokemon arena.
Choose from the Single, Double, Triple, Rotation and Shooter Pokemon Battle types. The Pokemon battle starts as soon as another person is placed in your arena.