Gengar-Mega @ Focus Sash  
Ability: No Guard  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Taunt  
- Fissure  
- Moongeist Beam  
- Toxic Spikes  

Gengar-Mega @ Choice Scarf  
Ability: Parental Bond  
EVs: 248 HP / 28 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
- Moongeist Beam  
- Sludge Wave  
- Focus Blast  
- U-turn  

Kartana @ Focus Sash  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Sunsteel Strike  
- Searing Sunraze Smash  
- Spectral Thief  
- Shell Smash  

Mewtwo-Mega-Y @ Choice Scarf  
Ability: Innards Out  
EVs: 252 HP / 252 SpA / 252 Spe  
Naive Nature  
IVs: 0 Atk / 0 Def / 0 SpD  
- Light That Burns the Sky  
- Menacing Moonraze Maelstrom  
- Stealth Rock  
- Trick  

Blissey (F) @ Safety Goggles  
Ability: Innards Out  
EVs: 252 HP / 252 SpA / 252 SpD / 252 Spe  
Gentle Nature  
IVs: 0 Atk / 0 Def  
- Shore Up  
- Defog  
- Whirlwind  
- Final Gambit  

Blissey (F) @ Leftovers  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Shore Up  
- Whirlwind  
- Parting Shot  
- Metal Burst