Gengarite is banned in OU and as thus so is mega Gengar. Use either Will-o-Wisp or Taunt over Hypnosis. With a Life Orb or Black Sludge.
Use Earthquake on Haxorus over DD or SD so you arent pooped on by steels. Lum Berry or Life Orb.
Tyranitar wants its Mega Stone.
Dragonite wants weakness policy. Thought imo its quite outclassed anyway. Extremespeed is an option over Roost to revenge kill frail stuff and let you bypass fast scarfers and revenge killers.
Ninja is fine, but be aware he make also be banned soon. Life Orb or Sash or Expert Belt.
Also itd get a better answet to fairies because 4/6 are hit super effectively by them and Gengar is frail as hell so that wont fly. Id replace something for a steel so you dont compound said weakness.
This team is also at risk from being swept by anything if it gets a stat boost. Id say get an insurance policy. Scarf Ditto with Imposter might work well on this team.
Ditto @ Choice Scarf
Ability: Imposter
EVs: 248 HP / 252 Def / 8 SpD
Relaxed Nature
- Transform
Ditto is not a bad idea. Might also replace someone with Ferrothorn. Greninja techincally is not weak to Fairy because he will be losing his Dark typing. I'm still using Mega Gengar because he's only banned in Smogon and I will mostly be battling friends (who have very well put together teams as well) and random people on the PSS. I thought about Brick Break instead of Poison Jab for Haxorus. Already replaced SD with EQ. Although I REALLY do like the idea of Mega Tyranitar so I may take your advice. Not sure what these policy things are that you've mentioned. I've seen them around but not sure what they do. Also for Gengar I replaced Hypnosis with Energy Ball for Ground types after it loses Levitate but Will-O-Wisp sounds good too. If I were to replace a member of this team for Ferrothorn who should I pick? Also thought about Talonflame. The main reason I don't care about banned Pokes is because people run mad legendaries and I HATE the idea of using Legends so it seems fair to me. Just my opinion. I do appreciate your advice though and will for sure take the vast majority of it into account. If there's any other concerns I would love to know about them.