Latios-Mega (M) @ Latiosite  
Ability: Levitate  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Roost  
- Stored Power  
- Thunderbolt  

Keldeo @ Waterium Z  
Ability: Justified  
EVs: 4 HP / 252 Atk / 252 Spe  
Adamant Nature  
- Liquidation  
- Poison Jab  
- Close Combat  
- Swords Dance  

Blacephalon @ Choice Scarf  
Ability: Beast Boost  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Flamethrower  
- Fire Blast  
- Shadow Ball  
- Trick  

Magearna @ Leftovers  
Ability: Soul-Heart  
EVs: 252 HP / 96 SpA / 160 SpD  
Careful Nature  
IVs: 0 Atk / 0 Spe  
- Volt Switch  
- Ice Beam  
- Trick Room  
- Fleur Cannon  

Regice @ Expert Belt  
Ability: Clear Body  
EVs: 252 HP / 4 Def / 252 SpA  
Rash Nature  
IVs: 0 Atk / 0 Spe  
- Ice Beam  
- Hidden Power [Fire]  
- Thunderbolt  
- Focus Blast  

Excadrill @ Focus Sash  
Ability: Mold Breaker  
EVs: 252 HP / 4 Atk / 252 Spe  
Timid Nature  
- Stealth Rock  
- Toxic  
- Rock Tomb  
- Rapid Spin