Can you rate my Balanced Hackmons team?

Question

Mewtwo-Mega-X @ Life Orb
Ability: Magic Guard
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe
Adamant Nature
- Volt Tackle
- Brave Bird
- Wood Hammer
- Flare Blitz

This is my all-out attacker. Magic Guard for no recoil on the moves, and Life Orb for even more damage.

Rayquaza-Mega @ Power Herb
Ability: Unburden
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Oblivion Wing
- Geomancy
- Core Enforcer
- Flash Cannon

Set up with Geomancy. Flash Cannon is for Ice & Fairy.

Arceus-Electric @ Power Herb
Ability: No Guard
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Hypnosis
- Geomancy
- Zap Cannon
- Blizzard

Start with Hypnosis, then get the Geomancy in. Blizzard for Ground types.

Metagross-Mega @ White Herb
Ability: Simple
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
Naughty Nature
- Shell Smash
- Sunsteel Strike
- Stored Power
- Liquidation

Start with Shell Smash. This brings the damage of Stored Power to a crazy 260 damage. Sunsteel Strike for Sturdninja, Liquidation for Fire and Ground.

Diancie-Mega @ Life Orb
Ability: Contrary
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
Hasty Nature
- V-create
- Superpower
- Spiky Shield
-Recover

(Tell me if I should swap Diancie out with another Pokemon.) My Contrary set. Spiky Shield is for Sturdninja, because the most common set for it is Endeavor + Extreme Speed, which are physical moves.

Deoxys-Speed @ Aguav Berry
Ability: Bad Dreams
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Stealth Rock
- Toxic Spikes
- Spore
- Whirlwind

Setter Upper. Starts with Spore, then start with the hazards. Then use Whirlwind. Bad Dreams is for recovery. Aguav Berry is for if you get knocked down to low health, you'll be raised back up and can continue setting up.

Comments

The Arceus Electric will become Normal Type without a Zap Plate because BH simulates the in-game programming restrictions. You should probably have it as Arceus-Flying so that if an Imposter Pokémon copies it, it will be Flying type without the plate. :P

I find your choices interesting considering the Meta Game. While Sturdy Shednija should be looked out for, you also have to consider the common effective strategies, such as Triage+Healing moves, Prankster+Haze (which pretty much stops all of your strategies), Magic Bounce, Dazzling+Fast Pokémon, Pixilate+Diancie+Extreme Speed+Boomburst, Steelworker+Kartana/Solgaleo/Dusk-Mane-Necrozma/other strong steel type+Sunsteel Strike+Steelium Z/Solgaleum-Z, Comatose, Imposter Blissey+Scarf, Imposter Chansey+Eviolite, Imposter Pikachu+Light Ball, and other Contrary spammers. You at least need a planned way of stopping many of these strategies. :P

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Thanks!