Eternatus @ Black Sludge  
Ability: Teravolt  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Magma Storm  
- Core Enforcer  
- Taunt  
- Spikes  

Spectrier @ Life Orb  
Ability: Solar Power  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Astral Barrage  
- Blue Flare  
- Synthesis  
- Ice Beam  

Diancie @ Wiki Berry  
Ability: Sand Stream  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Shore Up  
- Entrainment  
- U-turn  
- Nuzzle  

Ho-Oh @ Heat Rock  
Ability: Drought  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- V-create  
- Morning Sun  
- Teleport  
- Entrainment  

Yveltal @ Heavy-Duty Boots  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Coil  
- Wicked Blow  
- Rapid Spin  
- Shore Up  

Tapu Fini @ Heavy-Duty Boots  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Haze  
- Recover  
- Parting Shot  
- Moonblast