Please rate my OU team?

Question

Airplanes (Jirachi) @ Leftovers
Ability: Serene Grace
EVs: 224 HP / 252 Atk / 32 Spe
Adamant Nature
- Wish
- Thunder Wave
- Iron Head
- Zen Headbutt

Serpentine (Serperior) @ Leftovers
Ability: Contrary
Shiny: Yes
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
- Giga Drain
- Leaf Storm
- Leech Seed
- Glare

BulkBird (Altaria-Mega) @ Altarianite
Ability: Pixilate
EVs: 240 HP / 252 SpD / 16 Spe
Calm Nature
- Cotton Guard
- Roost
- Flamethrower
- Moonblast

Raikou @ Assault Vest
Ability: Pressure
EVs: 248 SpA / 48 SpD / 212 Spe
Timid Nature
- Thunderbolt
- Volt Switch
- Hidden Power [Ice]
- Shadow Ball

Minecraft (Diancie) @ Light Clay
Ability: Clear Body
EVs: 252 HP / 196 Def / 60 SpD
Calm Nature
- Calm Mind
- Moonblast
- Light Screen
- Reflect

Bow (Sylveon) @ Leftovers
Ability: Pixilate
Shiny: Yes
EVs: 252 HP / 220 Def / 36 SpD
Bold Nature
- Hyper Voice
- Wish
- Protect
- Heal Bell

Jirachi: Physical sweeper/para flincher
Serperior: Special sweeper
Altaria: Physical wall
Raikou: Special wall
Diancie: Mixed wall
Sylveon: Cleric

Any thoughts?

Comments

I think you should have some type coverage on Serperior so replace leech seed (since you have Giga drain for healing) with
aerial ace. (and as a bonus you now have a chance against bug types.

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Type coverage is a good idea. Aerial Ace is not. Hidden Power Fire is a much better option.

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You're probably right. I didnt think of that.