Mewtwo-Mega-Y @ Life Orb  
Ability: Sheer Force  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Tail Glow  
- Psychic  
- Bug Buzz  
- Blue Flare  

Gyarados-Mega @ Safety Goggles  
Ability: Soundproof  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Anchor Shot  
- Recover  
- Parting Shot  
- Spectral Thief  

Gengar-Mega @ Ghostium Z  
Ability: Illusion  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Moongeist Beam  
- Sludge Bomb  
- Stealth Rock  
- Tail Glow  

Chansey @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Fake Out  
- Whirlwind  
- Final Gambit  
- Trick  

Giratina @ Safety Goggles  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Core Enforcer  
- Defog  
- Spectral Thief  
- Recover  

Golisopod @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- U-turn  
- Haze  
- Recover  
- Glare