Rate my Gen 7 OU team

Question

Bewear @ Leftovers
Ability: Fluffy
Shiny: Yes
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Ice Punch
- Thunder Punch
- Earthquake
- Low Sweep
//My Physical Sweeper

Stunfisk @ Leftovers
Ability: Static
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Swagger
- Foul Play
- Earthquake
- Spark
//Physical Sweeper 2

Drifblim @ Rocky Helmet
Ability: Aftermath
EVs: 4 HP / 252 Def / 252 SpD
Impish Nature
- Stockpile
- Baton Pass
- Focus Energy
- Phantom Force
//Baton Passer

Shuckle @ Sitrus Berry
Ability: Sturdy
Shiny: Yes
EVs: 4 HP / 252 Atk / 126 Def / 126 SpD
- Power Trick
- Earthquake
- Protect
- Stealth Rock
//Power Trick Physical Sweeper

Tapu Fini @ BrightPowder
Ability: Misty Surge
EVs: 248 HP / 252 SpA / 8 SpD
Modest Nature
IVs: 0 Atk
- Nature's Madness
- Moonblast
- Surf
- Hidden Power [Ground]
//Special Sweeper

Pheromosa @ Leftovers
Ability: Beast Boost
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Triple Kick
- Lunge
- Low Sweep
- Me First
//Physical Sweeper

Comments

Are you sure it's OU? Groudon isn't allowed in any kind of OU that I know of.

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*Facepalm* I forgot...
Any suggestions for Pokemon that can mega evolve/ have a stronger form?

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I don't know why you'd need such a Pokemon. If you really do, mega Metagross is statistically the best mega in OU.

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I think you will be better off with eevee being your baton passer
It can use extreme Eevoboost that boosts all stats sharply
(You need an eeveenium z) (I cant spell today lol)

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Or just not have a baton passer. or use Mew or Celebi or Scolipede.