Mewtwo-Mega-Y @ Heavy-Duty Boots  
Ability: Insomnia  
Tera Type: Ghost  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Psystrike  
- Focus Blast  
- Fire Blast  

Rayquaza-Mega @ Heavy-Duty Boots  
Ability: Delta Stream  
Tera Type: Normal  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Extreme Speed  
- Dragon Dance  
- Earthquake  
- Dragon Ascent  

Diancie-Mega @ Focus Sash  
Ability: Magic Bounce  
Tera Type: Ghost  
EVs: 248 HP / 8 Atk / 252 Spe  
Jolly Nature  
- Stealth Rock  
- Spikes  
- Endeavor  
- Diamond Storm  

Groudon-Primal @ Blunder Policy  
Ability: Desolate Land  
Tera Type: Flying  
EVs: 236 HP / 168 Atk / 104 Spe  
Adamant Nature  
- Swords Dance  
- Precipice Blades  
- Stone Edge  
- Thunder Wave  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
Tera Type: Flying  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Iron Head  
- Substitute  
- Wild Charge  

Kyogre-Primal @ Heavy-Duty Boots  
Ability: Primordial Sea  
Tera Type: Electric  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Calm Mind  
- Origin Pulse  
- Thunder  
- Ice Beam