In the second game of our series, we discovered a big problem, and were forced to call it a draw after 200 turns. When Mew has transform on both sides, transform can be repeatedly used against each other to effectively have infinite PP, after both of the initial transforms are used on each side. As RBY Ubers is very much about PP Stall, it's not hard to come to a point where it is disadvantageous to switch out of this scenario, fearing you'd lose PP or be drawn into a Mewtwo freeze ditto.