Mewtwo-Mega-Y @ Focus Sash  
Ability: Protean  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Moongeist Beam  
- Sunsteel Strike  
- Moonblast  
- Shell Smash  

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

Blissey (F) @ Darkinium Z  
Ability: Innards Out  
EVs: 252 HP / 252 Atk / 252 SpA / 252 SpD  
Gentle Nature  
IVs: 0 Atk / 0 Def / 0 Spe  
- Toxic Spikes  
- Parting Shot  
- Magic Coat  
- Heal Order  

Yveltal @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Rash Nature  
- Shell Smash  
- Sunsteel Strike  
- Moongeist Beam  
- Light of Ruin  

Ferrothorn @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Core Enforcer  
- Defog  
- Strength Sap  
- Stealth Rock  

Gengar-Mega (M) @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Fissure  
- Toxic Spikes  
- Moongeist Beam  
- Taunt