Rate my team.

Question

This is my first team, would like advice &/or tips.

Mew @ Focus Sash
Ability: Synchronize
EVs: 252 HP / 252 SpD / 4 Spe
Timid Nature
IVs: 0 Atk
- Baton Pass
- Swords Dance
- Hypnosis
- Dream Eater

Mimikyu (F) @ Rocky Helmet
Ability: Disguise
Shiny: Yes
EVs: 252 Atk / 128 Def / 128 SpD
Jolly Nature
- Shadow Sneak
- Play Rough
- Shadow Claw
- Drain Punch

Rayquaza-Mega @ Focus Sash
Ability: Delta Stream
Shiny: Yes
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Draco Meteor
- Dragon Ascent
- Earthquake
- Flamethrower

BurialBlade (Aegislash) (M) @ Leftovers
Ability: Stance Change
Shiny: Yes
EVs: 4 HP / 252 Def / 252 SpD
Adamant Nature
- King's Shield
- Iron Head
- Sacred Sword
- Swords Dance

Dracarmo (Kommo-o) (M) @ Focus Band
Ability: Overcoat
EVs: 128 HP / 252 Atk / 128 Def
Adamant Nature
- Dragon Claw
- Drain Punch
- Stealth Rock
- Earthquake

Lycanroc-Dusk (M) @ Focus Sash
Ability: Tough Claws
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Accelerock
- Crunch
- Stealth Rock
- Zen Headbutt

Comments

What format?

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Assuming you're playing AG, the number one advice for you is to become acquainted with the metagame that you are playing. Proper, game-winning AG teams are full of cover legendaries and other overpowered Pokemon. The likes of Mimikyu, Mew, Lycanroc and Kommo-o do not cut it. If you want to use Pokemon like these, then drop Aegislash and Mega Ray and play in a lower tier where the others are viable, as what you have here is not a functional AG team.
For an idea of what works in AG, there is a list of the most used Pokemon from battles rated above 1760 points: https://www.smogon.com/stats/2018-12/gen7anythinggoes-1760.txt

Answer 1

I like the team, but I'm going to correct a few things.
1. Kommo-o is better off with dragon dance over stealth rock because mew will have it and change dragon claw to outrage. Life orb is better than focus band and the ability should be bulletproof.
2.on mimikyu the EV's should 252 Atk/ 4 Spd / 252 Spe. change drain punch to swords dance.
3.rayquaza is better as a physical attacker. I suggest

Rayquaza-Mega @ Life Orb
Ability: Delta Stream
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Ascent
- V-create
- Extreme Speed
- Dragon Dance

1. on lycanrock do
   Lycanroc-Dusk @ Life Orb
   Ability: Tough Claws
   EVs: 252 Atk / 4 Def / 252 Spe
   Jolly Nature
   - Swords Dance
   - Stone Edge
   - Fire Fang
   - Sucker Punch

2. change dream eater on mew to stealth rock.