Rate my national dex ag team

Question

This is my team-

Calyrex-Shadow @ Focus Sash
Ability: As One (Spectrier)
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Expanding Force (A good psychic type move for poison and fighting type Pokemons)
- Astral Barrage [It's signature move (Base power- 120)]
- Baton Pass [To transfer its stats increased by its ability (As one) to another Pokemon]
- Pollen Puff (For dark type Pokemons)

Yveltal @ Aguav Berry
Ability: Dark Aura
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Oblivion Wing [It's signature move (restores 75% of the damage dealt)]
- Roost
- Sucker Punch [Always moves first (especially for Calyrex shadow rider)]
- Hidden Power [Poison] (For fairy type Pokemons)

Arceus @ Leftovers
Ability: Multitype
EVs: 252 HP / 4 Atk / 252 Spe
Hasty Nature
- Swords Dance (Raises attack by 2 stage)
- Extreme Speed (Always moves first)
- Shadow Claw (For ghost type Pokemons as Extreme speed doesn't affect ghost type Pokemons)
- Recover

Xerneas @ Power Herb
Ability: Fairy Aura
EVs: 4 Def / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Geomancy (Raises special attack, special defense and speed by 2 stages)
- Moonblast (One of the best fairy type moves)
- Hidden Power [Fire] [For steel type Pokemons (especially for Zacian: Crowned)]
- Thunder

Marshadow @ Focus Sash
Ability: Technician
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Shadow Sneak [Always moves first (especially for Calyrex shadow rider)]
- Spectral Thief [It's signature move {it steals the target's all positive stat stages right before doing damage (also bypasses substitute)}]
- Rock Tomb [For flying type Pokemons such as Yveltal (Also decreases the target's speed by 1 stage)]
- Close Combat (Best fighting type move)

Rayquaza-Mega @ Life Orb
Ability: Delta Stream
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance (Raises attack and speed by 1 stage)
- Dragon Ascent [It's signature move (Base power- 120)]
- V-create [For Zacian: crowned (Base power- 180)]
- Extreme Speed (Always moves first)

Pls give your opinions and improvements needed to my team.
Thank you

Comments

Shiny Rayquaza-Mega with V-Create is illegal. Life Orb Yveltal is better than Aguav. HP [Poison] is extremely niche, Taunt or Rock Slide are better options. You can do Astral / Nasty / Baton Pass / Draining Kiss or Psyshock ShadowRex to give the boosts to the Yveltal. Do a Sash lead like Deoxys-Speed than the Marshadow. Life Orb > Leftovers Arceus.
e1: lol did you even check what changes I suggested?

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That's extremely weird lmfao. And descriptions of any kind are welcome, but not in this way, this just makes the question look cluttered.