My Second Team. Any Suggestions Or Changes Needed. OU Doubles

Question

Gengar-Mega @ Gengarite
Ability: Shadow Tag
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Shadow Ball
- Dazzling Gleam
- Sludge Bomb
- Destiny Bond

Ferrothorn @ Leftovers
Ability: Iron Barbs
Shiny: Yes
EVs: 252 HP / 88 Def / 168 Spe
Relaxed Nature
IVs: 0 Spe
- Spikes
- Stealth Rock
- Gyro Ball
- Power Whip

Braviary @ Choice Band
Ability: Defiant
Shiny: Yes
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Superpower
- Brave Bird
- Crush Claw
- Roost

Dragonite @ Lum Berry
Ability: Multiscale
Shiny: Yes
EVs: 44 Atk / 212 SpA / 252 Spe
Mild Nature
- Dragon Dance
- Thunderbolt
- Ice Beam
- Outrage

Blastoise @ Mystic Water
Ability: Torrent
Shiny: Yes
EVs: 184 HP / 252 SpA / 72 Spe
Modest Nature
IVs: 0 Atk
- Scald
- Rapid Spin
- Dark Pulse
- Ice Beam

Garchomp @ Focus Sash
Ability: Rough Skin
Shiny: Yes
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Dragon Claw
- Earthquake
- Crunch
- Swords Dance

Comments

Braviary: Give it Return instead of Crush Claw. Stat changes are easily removed by swapping, and it has bad base power. Also, I think Life Orb would go better on the set because you have Roost. Choice Band Roost is kind of silly. It's a free swap/setup turn for the opponent.

Blastoise: Excadrill is a lot better than Blastoise. RU Pokemon aren't that viable in Ubers. You can also give Excadrill Stealth Rocks to give another move slot to Ferrothorn.

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We give different advice for doubles and singles, so you have to pick one or ask two questions.

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Doubles Is The Choice I Will ask a separate question when i am ready for singles

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Starmie > Blastoise. It has lots of good sets while Blastoise can't do much without Mega evolving.

Answer 1

Braviary: Staraptor is better in almost every way.
Staraptor @ Choice Scarf
Ability: Reckless
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
-Close Combat
-Brave Bird
-Double-Edge
-U-Turn
Basically the same logic as your Braviary set, but with better stats. U-turn is used in case you don't feel like getting choice locked.

Dragonite: It's much better as a pure physical attacker, especially since dragon dance only boosts physical attack. Give it 252 Atk/4 Def/252 Spe Jolly. Replace thunderbolt and ice beam with iron head and fire punch for full weakness coverage and hitting everything for at least normal effectiveness.

Blastoise: Tentacruel is much better as a bulky rapid spinner.
Tentacruel @ Black Sludge
Ability: Clear Body
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
-Scald
-Rapid Spin
-Sludge Bomb
-Toxic
This is like Blastoise, but with less weaknesses and toxic immunity. In case you didn't know, toxic can't miss when used by a poison Pokémon.

Garchomp: Replace focus sash with life orb for more damage. Replace crunch with iron head for full weakness coverage.