Slaking @ Iapapa Berry  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Sunsteel Strike  
- Extreme Speed  
- Bolt Strike  

Slaking @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Pursuit  
- Extreme Speed  
- Sunsteel Strike  

Swampert-Mega @ Safety Goggles  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Defog  
- Parting Shot  
- Strength Sap  
- Spectral Thief  

Gengar-Mega @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Taunt  
- Moongeist Beam  
- Fissure  
- Stealth Rock  

Kartana @ Focus Sash  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- High Jump Kick  
- Sunsteel Strike  
- Searing Sunraze Smash  

Chansey (F) @ Wiki Berry  
Ability: Innards Out  
EVs: 252 HP / 252 SpD  
Gentle Nature  
IVs: 0 Atk / 0 Def / 0 Spe  
- Toxic Spikes  
- Magic Coat  
- Parting Shot  
- Roost