Only Special changes between seasons. The Special ruleset for season 2 are the VGC2014 rules. That means 4v4 Doubles with Pokemon from the Kalos Dex that were not PokeBank'd in. Mewtwo, Yveltal, Xerneas and Zygard are banned.
No amount of rallying would let me beat raytan7585. Congrats to raytan7585 for winning the CB9 Guru Contest!