Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 204 Def / 56 SpD  
Careful Nature  
- Flare Blitz  
- Whirlwind  
- Thunder Wave  
- Defog  

Gothitelle @ Leftovers  
Ability: Shadow Tag  
EVs: 248 HP / 252 Def / 8 Spe  
Bold Nature  
IVs: 0 Atk  
- Taunt  
- Cosmic Power  
- Charm  
- Rest  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 248 HP / 228 SpD / 32 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Mystical Fire  
- Cosmic Power  
- Recover  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 252 Def / 4 Spe  
Impish Nature  
- Stealth Rock  
- Morning Sun  
- Sunsteel Strike  
- Knock Off  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 72 HP / 252 SpD / 184 Spe  
Jolly Nature  
IVs: 0 Atk  
- Snarl  
- Roost  
- Toxic  
- Foul Play  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Moonblast  
- Rest  
- Sleep Talk  
- Geomancy