BP Magikarp

Combusken @ Leftovers
Ability: Speed Boost
EVs: 252 HP / 4 Def / 252 Spe
Timid nature
- Protect
- Baton Pass
- Substitute
- Focus Energy

Smeargle @ Leftovers
Ability: Own Tempo
EVs: 252 HP / 252 Def / 4 SDef
Bold nature
- Baton Pass
- Cotton Guard
- Substitute
- Confuse Ray

Gorebyss @ Leftovers
Ability: Hydration
EVs: 252 HP / 252 Def / 4 SDef
Calm nature
- Amnesia
- Baton Pass
- Confuse Ray
- Rain Dance

Sylveon @ Leftovers
Ability: Cute Charm
EVs: 252 HP / 252 Def / 4 SDef
Bold nature
- Wish
- Baton Pass
- Heal Bell
- Yawn

Mew @ Leftovers
Ability: Synchronize
EVs: 252 HP / 176 Def / 80 SDef
Calm nature
- Baton Pass
- Swords Dance
- Roar
- Substitute

Magikarp @ Scope Lens
Ability: Swift Swim
EVs: 252 HP / 252 Atk / 4 SDef
Adamant nature
- Bounce
- Hydro Pump
- Tackle
- Flail