Rain

Pelipper (M) @ Damp Rock
Ability: Drizzle
EVs: 248 HP / 252 Def / 8 SpA
Bold Nature
IVs: 29 Spe
- Scald
- Hurricane
- U-turn
- Roost

Garchomp (M) @ Rocky Helmet
Ability: Rough Skin
EVs: 248 HP / 168 Def / 92 Spe
Impish Nature
- Stealth Rock
- Dragon Tail
- Earthquake
- Fire Blast

Scizor-Mega (M) @ Scizorite
Ability: Light Metal
EVs: 248 HP / 8 Def / 252 SpD
Careful Nature
IVs: 29 Spe
- Bullet Punch
- U-turn
- Defog
- Roost

Tapu Koko @ Life Orb
Ability: Electric Surge
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunder
- Grass Knot
- Hidden Power [Ice]
- Roost

Golduck @ Waterium Z
Ability: Swift Swim
EVs: 4 HP / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Hydro Pump
- Encore
- Ice Beam
- Focus Blast

Araquanid @ Choice Band
Ability: Water Bubble
EVs: 248 HP / 252 Atk / 8 SpD
Brave Nature
IVs: 0 Spe
- Liquidation
- Leech Life
- Toxic
- Sleep Talk