Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 180 HP / 252 SpA / 76 Spe  
Mild Nature  
- Overheat  
- Precipice Blades  
- Toxic  
- Stealth Rock  

Kyogre @ Choice Scarf  
Ability: Drizzle  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Water Spout  
- Origin Pulse  
- Thunder  
- Ice Beam  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 168 Def / 252 SpA / 88 Spe  
Modest Nature  
IVs: 0 Atk  
- Thunder  
- Moonblast  
- Hidden Power [Ground]  
- Geomancy  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 252 SpD / 4 Spe  
Careful Nature  
- Sunsteel Strike  
- Earthquake  
- Toxic  
- Morning Sun  

Swampert-Mega (M) @ Swampertite  
Ability: Swift Swim  
EVs: 40 HP / 252 Atk / 216 Spe  
Adamant Nature  
- Earthquake  
- Waterfall  
- Ice Punch  
- Power-Up Punch  

Yveltal @ Charti Berry  
Ability: Dark Aura  
EVs: 252 HP / 176 Def / 80 Spe  
Impish Nature  
- Foul Play  
- Sucker Punch  
- Defog  
- Roost