Slowbro @ Sablenite  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Foul Play  
- Slack Off  
- Ice Beam  
- Teleport  

Magearna @ Manectite  
Ability: Soul-Heart  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Heal Bell  
- Ice Beam  
- Volt Switch  
- Pain Split  

Entei @ Altarianite  
Ability: Pressure  
EVs: 160 HP / 252 Atk / 96 Spe  
Adamant Nature  
- Sacred Fire  
- Double-Edge  
- Extreme Speed  
- Stone Edge  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 188 Def / 72 SpD  
Bold Nature  
- Oblivion Wing  
- Roost  
- Defog  
- U-turn  

Eternatus @ Life Orb  
Ability: Pressure  
EVs: 156 Def / 176 SpA / 176 Spe  
Modest Nature  
IVs: 0 Atk  
- Sludge Wave  
- Sludge Bomb  
- Flamethrower  
- Recover  

Tapu Koko @ Lucarionite  
Ability: Electric Surge  
EVs: 252 HP / 32 Def / 32 SpA / 192 Spe  
Modest Nature  
IVs: 0 Atk  
- Thunderbolt  
- Stored Power  
- Calm Mind  
- Roost