Metagross-Mega @ Metagrossite  
Ability: Tough Claws  
EVs: 252 Atk / 80 Def / 176 SpD  
Adamant Nature  
- Meteor Mash  
- Agility  
- Earthquake  
- Ice Punch  

Toxapex @ Black Sludge  
Ability: Merciless  
EVs: 4 HP / 252 Def / 252 SpD  
Bold Nature  
IVs: 0 Atk  
- Venoshock  
- Toxic  
- Toxic Spikes  
- Protect  

Kyogre-Primal @ Blue Orb  
Ability: Primordial Sea  
EVs: 236 HP / 252 SpA / 20 SpD  
Modest Nature  
IVs: 0 Atk  
- Thunder  
- Surf  
- Thunder Wave  
- Aqua Ring  

Marshadow @ Mago Berry  
Ability: Technician  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Shadow Sneak  
- Bulk Up  
- Drain Punch  
- Knock Off  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 252 Atk / 252 SpA  
Naughty Nature  
- Geomancy  
- Moonblast  
- Reflect  
- Horn Leech  

Palkia @ Expert Belt  
Ability: Pressure  
EVs: 252 HP / 252 SpA / 4 Spe  
Modest Nature  
IVs: 0 Atk  
- Hydro Pump  
- Spacial Rend  
- Substitute  
- Aura Sphere