Rayquaza-Mega @ Choice Band  
Ability: Mold Breaker  
EVs: 252 Atk / 92 Def / 164 Spe  
Adamant Nature  
- Dragon Ascent  
- U-turn  
- Trick  
- V-create  

Rayquaza-Mega @ Focus Sash  
Ability: Huge Power  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Ascent  
- Thousand Arrows  
- Gear Grind  
- Close Combat  

Rayquaza-Mega @ Sky Plate  
Ability: Aerilate  
EVs: 252 HP / 252 Atk / 4 Spe  
Adamant Nature  
- Fake Out  
- Extreme Speed  
- V-create  
- Spikes  

Rayquaza-Mega @ Choice Specs  
Ability: Mold Breaker  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Spacial Rend  
- Aeroblast  
- Volt Switch  
- Searing Shot  

Swampert-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 4 Spe  
Bold Nature  
IVs: 0 Atk  
- Defog  
- Aromatherapy  
- Wish  
- King's Shield  

Xerneas @ Iron Plate  
Ability: Wonder Guard  
EVs: 68 Def / 252 SpA / 188 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Judgment  
- Moonblast  
- Magic Coat