Audino-Mega @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Spiky Shield  
- Psycho Shift  
- Heal Pulse  
- Wish  

Mewtwo-Mega-X @ Life Orb  
Ability: Adaptability  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Jolly Nature  
- Photon Geyser  
- Low Kick  
- King's Shield  
- Helping Hand  

Chansey @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Metal Burst  
- Shore Up  
- Spiky Shield  
- U-turn  

Chansey @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Metal Burst  
- Shore Up  
- Spiky Shield  
- U-turn  

Mewtwo-Mega-Y @ Life Orb  
Ability: Queenly Majesty  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Helping Hand  
- Psystrike  
- Blue Flare  
- High Jump Kick  

Rayquaza-Mega @ Icicle Plate  
Ability: Triage  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Helping Hand  
- Tail Glow  
- Oblivion Wing  
- Judgment