>>18691552Which one are you going to, OP?
Also, make sure all your pokemon are kalos bred and are in the kalos dex.
Some things to expect:
You may see some Dark Void Smeargles on some gimmicky teams, but I wouldn't expect a lot of them.
Another thing to watch out for is Perish Trap with Mega-Gengar and Gothitelle. It's a dick thing to do, but it works so people do it.
There's a lot of intimidate users, such as Scrafty, Salamence, Gyarados, Mega-Manectric, and especially Mega-Mawile.
Moves like Fake Out, Quick Guard, Wide Guard, and especially Protect will be seen fairly often. Feint you may see, but it's not that common.
If you see Charizard then it most likely means you're up against a sun team. Someone may use Charizard-X if there's not a lot of pokemon on their team to benefit from sun. It could be a viable strategy to throw people off.
There are a few variations of Prankster Meowstic you may see. Fake Out/Quick Guard support, screen support, and Charm support. Some may be a mix, but I would say that Charm is the least common.
Notable Fake Out users: Ludicolo, Scrafty, Mr. Mime, Kangaskhan, Mienshao, Meowstic, Weavile.
Marvel Scale + Weakness Policy Dragonite is something to watch out for.
Special Salamence with Choice Scarf / Specs you may run in to.
Tyranitar can be ran either as physical or special. I'd say that special T-tar
Be sure your team won't be destroyed by trick room.
Slowbro, Slowking, Gardevoir, Gothitelle, Reuniclus, Chandelure, Trevenant, Aromatisse, Malamar, and Gourgeist are some pokemon that could be used as trick room users. I would go as far as to suspect Prankster Meowstic as a trick room user, since it could still keep it's speed with Prankster.
That's about all I can think of off the top of my head.