SM OU Any improvements?

[Jevise]

Toxapex @ Black Sludge
Ability: Regenerator
EVs: 248 HP / 8 Def / 252 SpD
Calm Nature
- Scald
- Haze
- Recover
- Toxic Spikes

Landorus-Therian @ Rocky Helmet
Ability: Intimidate
EVs: 252 HP / 240 Def / 16 Spe
Impish Nature
- Stealth Rock
- Earthquake
- Hidden Power [Ice]
- U-turn

Magearna @ Assault Vest
Ability: Soul-Heart
EVs: 248 HP / 8 SpA / 252 SpD
Calm Nature
- Fleur Cannon
- Iron Head
- Hidden Power [Fire]
- Volt Switch

Tapu Koko @ Choice Specs
Ability: Electric Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunderbolt
- Dazzling Gleam
- Volt Switch
- Hidden Power [Fire]

Scizor @ Choice Band
Ability: Technician
EVs: 248 HP / 252 Atk / 8 Spe
Adamant Nature
- U-turn
- Bullet Punch
- Superpower
- Pursuit

Latios-Mega @ Latiosite
Ability: Levitate
EVs: 4 Atk / 252 SpA / 252 Spe
Naive Nature
- Draco Meteor
- Psychic
- Earthquake
- Roost

 

[IronBullet]

Welcome to Smogon! I'm locking your RMT for the time being as the forum rules require that you provide in-depth descriptions for each Pokemon to explain their roles. Please read the rules carefully and take a look at Team Showcase to see the level of detail we require. PM me with updated descriptions and I'll be happy to unlock this.