Gen 7 OU Rain Team

Ferrothorn @ Leftovers
Ability: Iron Barbs
EVs: 252 HP / 44 Atk / 104 Def / 108 SpD
Brave Nature
IVs: 0 Spe
- Gyro Ball
- Stealth Rock
- Spikes
- Power Whip

Swampert-Mega @ Swampertite
Ability: Torrent
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Power-Up Punch
- Waterfall
- Earthquake
- Ice Punch

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

Pelipper @ Damp Rock
Ability: Drizzle
EVs: 144 HP / 128 Def / 52 SpA / 148 SpD / 36 Spe
Modest Nature
IVs: 0 Atk
- Hurricane
- Defog
- Roost
- Scald

Hawlucha @ Electric Seed
Ability: Unburden
EVs: 44 HP / 252 Atk / 212 Spe
Jolly Nature
- High Jump Kick
- Swords Dance
- Acrobatics
- Drain Punch

Greninja-Ash (M) @ Choice Specs
Ability: Battle Bond
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Hydro Pump
- Ice Beam
- Dark Pulse
- Extrasensory