Any suggestions for this team to improve?

[kloppstock1]

Hello together, i´m new to the competitive battles (about one week) and i created my first team. I think its quite balanced but tell me what you think about it.
This Team is meant to be played as 1on1.
What are the biggest weaknesses? what would u change in terms of EVs and movesets?
Feel free to add something if you want!

Thanks for helping!


Milotic:
Nature: Modest
EVs: HP: 76; Defense: 172; SpAtk: 252;  Spd: 8
Ability: Competitive
Item: Leftovers
Moveset: Recover; Icebeam; Surf; Hiddenpower Grass

Dragonite:
Nature: Adamant
EVs: HP: 252; Atk: 104; Def:96; SpDef: 56
Ability: Multiscale
Item: Weakness Policy
Moveset: Dragondance; Roost; Outrage; Extreme Speed

Mega-Altaria:
Nature: Adamant
EVs: HP: 236; Atk:104; Def:16; SpDef:136; Spd:16
Ability: Cload Nine / Pixilate
Item:Altarianite
Moveset: Roost; Return; Earthquake; Healbell

Magnezone:
Nature: Modest
EVs: HP: 128; SpAtk: 252; Spd: 128
Ability: Magnetpull
Item: Airballon
Moveset: Magnetrise; Thunderbolt; Flash Canon; Hidden Power Fire

Tentacruel:
Nature: Calm
EVs: HP: 252; Def: 136; SpDef: 116; Spd: 4
Ability: Liquid Ooze
Item: Black Sludge
Moveset: Rapid Spin; Toxic Spikes; Sludge Wave; Acidspray

Scizor:
Nature: Impish
EVs: HP: 248; Atk:44; Def:16; SpDef:200
Ability: Technian
Item: Life Orb
Moveset: Roost; Swordsdance; Bullet Punch; U-turn