A standard VGC rain team

Thundurus-Therian @ Choice Specs
Ability: Volt Absorb
Shiny: Yes
EVs: 20 HP / 236 SpA / 252 Spe
Timid Nature
IVs: 0 Atk / 30 Def
- Thunder
- Hidden Power [Ice]
- Psychic
- Volt Switch

Politoed (M) @ Choice Scarf
Ability: Drizzle
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Scald
- Ice Beam
- Focus Blast
- Encore

Ludicolo (M) @ Assault Vest
Ability: Swift Swim
Shiny: Yes
EVs: 164 HP / 140 Def / 68 SpA / 4 SpD / 132 Spe
Bold Nature
- Hydro Pump
- Giga Drain
- Ice Beam
- Fake Out

Kingdra (F) @ Life Orb
Ability: Swift Swim
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
IVs: 0 Atk
- Muddy Water
- Hydro Pump
- Dragon Pulse
- Draco Meteor

Amoonguss (M) @ Rocky Helmet
Ability: Regenerator
EVs: 252 HP / 252 Def / 4 SpD
Relaxed Nature
IVs: 0 Atk
- Rage Powder
- Spore
- Sludge Bomb
- Protect

Swampert (F) @ Swampertite
Ability: Damp
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Rain Dance
- Waterfall
- Earthquake
- Ice Punch