Blissey (F) @ Leftovers  
Ability: Innards Out  
EVs: 252 HP / 252 SpA / 252 SpD / 252 Spe  
Mild Nature  
IVs: 0 Atk / 0 Def  
- Taunt  
- Shell Smash  
- Menacing Moonraze Maelstrom  
- Baton Pass  

Giratina-Origin @ Ghostium Z  
Ability: Innards Out  
EVs: 252 HP / 252 Atk / 252 SpA / 252 Spe  
Mild Nature  
IVs: 0 Def / 0 SpD  
- Shell Smash  
- Moongeist Beam  
- Searing Sunraze Smash  
- Baton Pass  

Kartana @ Focus Sash  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Sunsteel Strike  
- Searing Sunraze Smash  
- Sacred Sword  

Meloetta @ Safety Goggles  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
- Glare  
- Defog  
- U-turn  
- Shore Up  

Gengar-Mega @ Choice Scarf  
Ability: Parental Bond  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moongeist Beam  
- Secret Sword  
- Earth Power  
- Baton Pass  

Mewtwo-Mega-Y @ Leftovers  
Ability: No Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sheer Cold  
- Spore  
- Spikes  
- Baton Pass