Mewtwo-Mega-X @ Life Orb  
Ability: Steadfast  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naive Nature  
- Thunderbolt  
- Ice Beam  
- Rock Slide  
- Drain Punch  

Lunala @ Choice Scarf  
Ability: Shadow Shield  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moongeist Beam  
- Focus Blast  
- Ice Beam  
- Psyshock  

Salamence-Mega @ Yache Berry  
Ability: Aerilate  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Return  
- Roost  
- Earthquake  

Diancie-Mega @ Focus Sash  
Ability: Magic Bounce  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Stealth Rock  
- Moonblast  
- Explosion  
- Earth Power  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 216 HP / 100 SpA / 192 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Ice Beam  
- Defog  
- Recover  

Lucario-Mega @ Choice Band  
Ability: Adaptability  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Close Combat  
- Bullet Punch  
- Meteor Mash  
- Ice Punch