Groudon-Primal @ Red Orb  
Ability: Desolate Land  
Level: 50  
EVs: 252 HP / 252 Atk / 4 SpD  
Naughty Nature  
- Fire Punch  
- Earthquake  
- Thunder Punch  
- Rock Polish  

Marshadow @ Marshadium Z  
Ability: Technician  
Level: 50  
EVs: 4 HP / 252 Atk / 252 Spe  
Adamant Nature  
- Spectral Thief  
- Force Palm  
- Rock Tomb  
- Copycat  

Rayquaza-Mega @ Muscle Band  
Ability: Delta Stream  
Level: 50  
Hardy Nature  
- Outrage  
- Dragon Ascent  
- Swords Dance  
- Tailwind  

Xerneas @ Power Herb  
Ability: Fairy Aura  
Level: 50  
EVs: 4 HP / 252 SpA / 252 Spe  
Modest Nature  
- Moonblast  
- Thunderbolt  
- Geomancy  
- Protect  

Kyogre-Primal @ Blue Orb  
Ability: Primordial Sea  
Level: 50  
EVs: 252 HP / 4 SpA / 252 SpD  
Modest Nature  
- Origin Pulse  
- Thunder  
- Ice Beam  
- Rest  

Toxapex (M) @ Black Sludge  
Ability: Regenerator  
Level: 50  
Hardy Nature  
- Haze  
- Venom Drench  
- Toxic Spikes  
- Baneful Bunker