Basically the standard clauses plus Accuracy Clause. Focus Sash wouldn't be recommended since there would most likely be a fake out user. You can make your own clause called "Perish Song Clause" so the terms wouldn't be limited to three and have a draw.
Oh and no thanks ^_^
I already have all of the prizes myself :P
Thanks for the invite, but I'm not sure I want to join. My pokemon team sucks for wi-fi battles. If you want proof then here is my Wi-Fi battles wins and loses: Wins: 1, Losses: 6.