Kyogre-Primal @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Volt Switch  
- Defog  
- Roost  
- Signal Beam  

Groudon-Primal @ Safety Goggles  
Ability: Shadow Tag  
EVs: 248 HP / 252 Atk / 8 Def  
Adamant Nature  
- Bolt Strike  
- V-create  
- Baton Pass  
- Iron Head  

Blissey @ Shed Shell  
Ability: Imposter  
Happiness: 127  
EVs: 248 HP / 8 Atk / 252 Def  
Impish Nature  
IVs: 0 Atk  
- Parting Shot  
- Skill Swap  
- Final Gambit  
- Wish  

Alakazam-Mega @ Choice Scarf  
Ability: No Guard  
EVs: 4 Def / 252 SpA / 176 Spe  
Timid Nature  
IVs: 0 Atk  
- Sheer Cold  
- Inferno  
- Trick  
- Entrainment  

Gengar-Mega @ Spooky Plate  
Ability: Wonder Guard  
EVs: 252 Spe  
IVs: 0 Atk  
- Judgment  
- Quiver Dance  
- Destiny Bond  
- Magic Coat  

Mewtwo-Mega-Y @ Choice Specs  
Ability: Mold Breaker  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Earth Power  
- Psycho Boost  
- Searing Shot  
- Pursuit