Rate My OU Team

Question

Rotom-Wash @ Chesto Berry
Ability: Levitate
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Hydro Pump
- Volt Switch
- Will-O-Wisp
- Rest

Skarmory @ Rocky Helmet
Ability: Sturdy
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
- Counter
- Stealth Rock
- Whirlwind
- Roost

Latios (M) @ Life Orb
Ability: Levitate
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Draco Meteor
- Psyshock
- Thunderbolt
- Defog

Garchomp @ Choice Scarf
Ability: Rough Skin
EVs: 252 Atk / 4 SpA / 252 Spe
Adamant Nature
- Outrage
- Earthquake
- Fire Blast
- Stone Edge

Azumarill @ Assault Vest
Ability: Huge Power
EVs: 8 HP / 252 Atk / 248 SpD
Adamant Nature
- Aqua Jet
- Play Rough
- Waterfall
- Knock Off

Charizard @ Charizardite X
Ability: Blaze
EVs: 252 Atk / 4 Def / 252 Spe
Naive Nature
- Dragon Claw
- Flare Blitz
- Dragon Dance
- Earthquake

Comments

Having three Dragon Types makes your team extremely susceptible to Fairy Types. Garchomp and Mega Charizard X have very similar coverage and roles. I would suggest replacing one, much as I hate to say that.  I would also suggest replacing Counter on Skarm with a STAB move. :)

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Counter on skarmory is a risky move, It pays of well when it works but on the other hand not being able to even hit weakened special attackers is a risk

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Why do you have 3 physical attackers. Why don't you replace M-Charizard X with M-Charizard Y?
Here is a good Mega Charizard Y set:
Charizard @ Charizardite Y
Nature- Timid
EVs - 252 Sp.Att/252 Spd/4 HP or Sp.Def
Moves-
-Solar Beam
-Fire Blast
-Dragon Pulse
-Focus Blast

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This set has great coverage. Also, it's water weakness is covered by its Drought. Thanks for reading.