Hey everyone, can I get an opinion on this team?

Serperior (F) @ Miracle Seed
Ability: Contrary
Shiny: Yes
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 10 SpA
- Leaf Storm
- Dragon Pulse
- Dragon Tail
- Glare

Jolteon @ Choice Specs
Ability: Volt Absorb
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Signal Beam
- Thunderbolt
- Volt Switch
- Hidden Power [Water]

Vaporeon @ Leftovers
Ability: Water Absorb
EVs: 200 HP / 252 Def / 56 SpD
Calm Nature
- Wish
- Ice Beam
- Scald
- Protect

Goodra (F) @ Assault Vest
Ability: Hydration
EVs: 252 HP / 252 SpA / 4 Spe
Modest Nature
- Thunderbolt
- Fire Blast
- Ice Beam
- Draco Meteor

Mawile (F) @ Mawilite
Ability: Intimidate
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Sucker Punch
- Swords Dance
- Play Rough
- Iron Head

Steelix @ Leftovers
Ability: Sturdy
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
- Earthquake
- Dragon Tail
- Heavy Slam
- Stealth Rock