Rate my team... National Dex OU team

Question

Krookodile (M) @ Metronome
Ability: Moxie
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Power-Up Punch
- Darkest Lariat
- Earth Power
- Outrage

Staraptor (F) @ Choice Band
Ability: Intimidate
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Brave Bird
- Close Combat
- Return
- U-turn

Azumarill (F) @ Mystic Water
Ability: Thick Fat
EVs: 252 Def / 252 SpD
Relaxed Nature
- Aqua Jet
- Ice Beam
- Play Rough
- Rain Dance

Snorlax (M) @ Leftovers
Ability: Immunity
Shiny: Yes
EVs: 252 HP / 252 Atk / 4 Spe
Adamant Nature
- Belly Drum
- Return
- Rest
- Earthquake

Gengar (M) @ Choice Band
Ability: Cursed Body
EVs: 4 HP / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Shadow Ball
- Sludge Bomb
- Giga Drain
- Thunderbolt

Shuckle @ Leftovers
Ability: Contrary
EVs: 4 HP / 252 Def / 252 SpD
Jolly Nature
- Sticky Web
- Stealth Rock
- Toxic
- Knock Off

Comments

Why Earth Power Krookodile...Rain Dance Azumarill and Choice Band Gengar with no Physical Attacks...? Oh god...

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I question the following:

1. Moves choices on a few Pokémon
2. Item choices on a few Pokémon
3. Pokémon choices as a whole.

Why don'y you check out the VR's (https://www.smogon.com/forums/threads/national-dex-viability-rankings-v2.3666572/) and the Sample Teams (https://www.smogon.com/forums/threads/national-dex-sample-teams.3667921/).
Those will surely help you build better.

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Why Earth Power on Krookodile over Earthquake? Why Ice Beam and Rain Dance on Azumarill? Why Choice Band on Gengar with no physical moves? Why Jolly Shuckle?

Answer 1

Note that this answer is not from a competive specialist, so people like First Sinner might get a little mad at me
Ok, first of all, why Earth Power on Krookodile? That's a special attack that it doesn't benefit from at all. Replace it with Earthquake, or replace Krookodile with Excadrill or Landorus-T, far more used Ground types
For a Flying type, I recommend Corvknight over Staraptor:
Corvknight @ Leftovers
Ability: Mirror Armor
EVs: 8 Spe / 248 Atk / 252 Def
Impish Nature
- Brave Bird
- Iron Defense
- Body Press
- U-turn

That Azumarril set is horrible, what about using Ash-Greninja instead:
Greninja @ Choice Specs
Ability: Battle Bond
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Hydro Pump
- Dark Pulse
- Water Shuriken
- Spikes

While I love Snorlax, I would use Blissey instead
Blissey @ Heavy-Duty Boots
Ability: Natural Cure
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Seismic Toss
- Soft-Boiled
- Thunder Wave
- Teleport

Use Choice Specs on Gengar, not Choice Band, the rest seems fine to me

While your Shuckie set is fine, I guess, I recommend this instead
Shuckle @ Mental Herb
Ability: Sturdy
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Sticky Web
- Stealth Rock
- Encore
- Infestation

Hope I helped!!

Comments

I think you're better off using something else instead of Shuckle since there isn't anything benefitting from webs except Landorus-Therian and Ash-Greninja. You don't have a Mega Pokemon, so I think that standard bulky Calm Mind Mega Latias can fit in the last slot. Excadrill is bad if you're not using it as a Sand Rush sweeper or a hyper offense suicide Stealth Rocker (Landorus-T and Mew do that better) so it's either Landorus-T and MLatias or Excadrill and MTtar. That Corviknight also should be 252 HP / 252 Def / 4 SpD or 252 HP / 4 Def / 252 SpD because it doesn't need the attack boost and it doesn't outspeed anything really notable with 8 Speed EVs. 252 HP > 252 Def or Spd for next time.

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Thanks for complementing my question!!