Any suggestions or improvements?

[Besim]

Dragonite @ Leftovers
Ability: Multiscale
Level: 50
EVs: 252 Spd / 252 Atk / 4 SDef
Adamant Nature
- Dragon Claw
- Earthquake
- Dragon Dance
- Extreme Speed

Nidoking @ Assault Vest
Ability: Sheer Force
Level: 50
EVs: 252 SAtk / 152 Spd / 80 Def / 24 SDef
Timid Nature
- Ice Beam
- Sludge Bomb
- Earth Power
- Shadow Ball

Venomoth @ Focus Sash
Ability: Wonder Skin
Level: 50
EVs: 252 HP / 252 Spd / 4 SDef
Timid Nature
- Quiver Dance
- Sleep Powder
- Bug Buzz
- Baton Pass

Greninja @ Expert Belt
Ability: Protean
EVs: 252 SAtk / 252 Spd / 4 SDef
Timid Nature
- Ice Beam
- Dark Pulse
- Grass Knot
- Extrasensory

Ferrothorn @ Rocky Helmet
Ability: Iron Barbs
EVs: 252 SDef / 124 Def / 132 HP
IVs: 0 Spd
- Gyro Ball
- Thunder Wave
- Stealth Rock
- Leech Seed

Feraligatr @ Life Orb
Ability: Torrent
Level: 50
EVs: 252 Spd / 252 Atk / 4 HP
Adamant Nature
- Aqua Jet
- Crunch
- Dragon Dance
- Ice Punch