Eternatus @ Life Orb  
Ability: Pressure  
EVs: 112 HP / 16 Def / 252 SpA / 128 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Flamethrower  
- Sludge Bomb  
- Recover  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Sunsteel Strike  
- Toxic  
- Stealth Rock  
- Moonlight  

Yveltal @ Choice Scarf  
Ability: Dark Aura  
EVs: 72 Atk / 252 SpD / 184 Spe  
Jolly Nature  
- Knock Off  
- Foul Play  
- Defog  
- Roost  

Blissey (F) @ Utility Umbrella  
Ability: Healer  
EVs: 252 Def / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Shadow Ball  
- Confide  
- Teleport  
- Soft-Boiled  

Xerneas @ Heavy-Duty Boots  
Ability: Fairy Aura  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Moonblast  
- Aromatherapy  
- Rest  
- Sleep Talk  

Groudon @ Leftovers  
Ability: Drought  
EVs: 176 HP / 96 Atk / 180 Def / 56 Spe  
Impish Nature  
- Earthquake  
- Stone Edge  
- Thunder Wave  
- Swords Dance