Rate my team (Gen 9 VGC)

Question

Gholdengo @ Choice Specs
Ability: Good as Gold
Level: 50
Tera Type: Water
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Make It Rain
- Power Gem
- Shadow Ball
- Trick
Choice Specs Gholdengo is really powerful with Make it Rain. It has got STAB with Shadow ball and Power Gem for Fire Types.
Trick is for Defensive pokemon with items like Assualt vest and Eviolite.

Hydreigon @ Life Orb
Ability: Levitate
Level: 50
Tera Type: Steel
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Draco Meteor
- Dark Pulse
- Tailwind
- Heat Wave
Hydreigon plays a support and offensive role in the team. It works wonderfully well with Gholdengo. Life orb helps him to make Offensive Pressure.

Indeedee-F @ Psychic Seed
Ability: Psychic Surge
Level: 50
Tera Type: Fairy
EVs: 212 HP / 44 Def / 252 SpA
Modest Nature
IVs: 0 Atk
- Protect
- Follow Me
- Helping Hand
- Psychic
Indeedee is a completely support Pokemon which helps Armarouge with Psychic Terrain and is a Murkrow counter.

Armarouge @ Colbur Berry
Ability: Flash Fire
Level: 50
Tera Type: Psychic
EVs: 244 HP / 252 SpA / 12 SpD
Quiet Nature
IVs: 0 Atk
- Armor Cannon
- Expanding Force
- Wide Guard
- Trick Room
Armarouge is the offensive mon of the team. It works well with Indeedee with the Powerful Expanding force in Psychic Terrian.

Amoonguss @ Black Sludge
Ability: Regenerator
Level: 50
Tera Type: Grass
EVs: 124 HP / 124 Def / 156 SpA / 104 SpD
Modest Nature
IVs: 0 Atk
- Clear Smog
- Rage Powder
- Spore
- Pollen Puff
Amoonguss is the Trick room counter pokemon. It is not affected by Rage powder and Spores the Trick room setter up.

Meowscarada @ Choice Band
Ability: Overgrow
Level: 50
Tera Type: Grass
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Flower Trick
- U-turn
- Knock Off
- Play Rough
Meowscarada is the cannon of the team. It has got one purpose to take out mons as fast as possible.

Answer 1

1. Indeedee and Armarouge support each other well but Psychic Terrain puts Amoonguss at risk due to its Poison typing because it will benefit opposing Psychic types. Psychic Terrain may prevent Rage Powder as well.
2. Choice Specs on Gholdengo isn't a good choice. You can't use Trick and you'll probably get two attacks before you're forced to switch out. Switching out loses you a turn and you can't safely switch in ANY of your team because they all share a weakness with Gholdengo. If you want to keep Gholdengo, change it's item. Maybe to Weakness Policy? And consider making it bulkier?
3. Amoongus should have it's speed EVs moved to HP just in case it can't respond to Trick Room for whatever reason. Rage Powder is a priority move that forces it to take hits and speed doesn't help with that goal.
4. Meowscarada is a glass cannon, switch its item to Focus Sash so you can always U-Turn out of danger if needed. Just note 3 of your Pokemon share weaknesses with it.

Overall, half of your team is weak to fire with no direct response (Flash Fire helps but that's a deterrent and not a counter as Armarogue isn't Super Effective against it).

Comments

Gholdengo can use Trick with Choice Specs. The item you're thinking of is Assault Vest, unless you mean Gholdengo won't have the opportunity to use Trick.

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Gholdengo can use trick with choice specs and Amoongus does not have any speed EV's