My battle with Knight of Time is close to the end, and I still have one slot free. This should be something extraordinary. I don't know if we have seen anything like this at ASB before.
In the beginning, there are no banned moves. But each time, both the battlers will have to ban a move. That makes two banned new moves each round. Neither of the battlers can use those moves as soon as they are banned. However, the rule concerning the newly banned move won't come into effect until next round, so you can say, for instance, "use Earthquake thrice, I ban Earthquake" Also your opponent is able to use the newly banned move, but next round, not any more. In the case of moves like Rollout, Fly, Dig, Future Sight etc. you can issue those before they are banned and they still come into full effect afterwards. The banned moves are banned all the way to the end of the battle.
My opponent or the ref can decide which one of us sends out first as well as the number of Pokemon used. As long as it is more than 1 on 1, and one out at a time. As for the arena, unless you have something special in your mind, let's go with just standard stadium or something simple.