Registeel @ Safety Goggles  
Ability: Prankster  
Level: 98  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Haze  
- Shore Up  
- Taunt  
- U-turn  

Aegislash @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Haze  
- Shore Up  
- Destiny Bond  
- U-turn  

Don't fool yourself (Chansey) @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Metal Burst  
- Shore Up  
- Spectral Thief  
- Baton Pass  

Rayquaza-Mega @ Earth Plate  
Ability: Triage  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Oblivion Wing  
- Core Enforcer  
- Tail Glow  
- Judgment  

Mewtwo-Mega-X @ Safety Goggles  
Ability: Dazzling  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Icicle Crash  
- First Impression  
- Follow Me  
- Shore Up  

Diancie-Mega @ Steel Memory 
Ability: Pixilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Shell Smash  
- Multi-Attack  
- Extreme Speed  
- Close Combat