Mewtwo-Mega-Y @ Choice Specs  
Ability: Mold Breaker  
Tera Type: Dark  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psystrike  
- Fire Blast  
- Earth Power  
- Dark Pulse  

Gyarados-Mega @ Life Orb  
Ability: Mold Breaker  
Tera Type: Fairy  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Crunch  
- Waterfall  
- Earthquake  
- Shell Smash  

Kyurem-Black @ Icicle Plate  
Ability: Teravolt  
Tera Type: Ice  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Fusion Bolt  
- Stone Edge  
- Tera Blast  
- Shell Smash  

Necrozma-Dusk-Mane @ Choice Band  
Ability: Huge Power  
Tera Type: Normal  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naughty Nature  
- Sunsteel Strike  
- Photon Geyser  
- Knock Off  
- Earthquake  

Lunala @ Leftovers  
Ability: Shadow Shield  
Tera Type: Normal  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Moongeist Beam  
- Teleport  
- Corrosive Gas  
- Moonlight  

Rayquaza-Mega @ Sky Plate  
Ability: Aerilate  
Tera Type: Flying  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Extreme Speed  
- Double-Edge  
- Earthquake  
- Swords Dance