Mewtwo-Mega-X @ Twisted Spoon  
Ability: Psychic Surge  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Psycho Boost  
- Close Combat  
- Moongeist Beam  
- Snatch  

Rayquaza-Mega @ Choice Specs  
Ability: Delta Stream  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  

Ho-Oh @ Safety Goggles  
Ability: Unaware  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Spectral Thief  
- Heal Order  
- Entrainment  
- Leech Seed  

Registeel @ Safety Goggles  
Ability: Magic Bounce  
Level: 98  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Defog  
- U-turn  
- Spectral Thief  
- Heal Order  

Zygarde-Complete @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Haze  
- Slack Off  
- Core Enforcer  
- Stealth Rock  

Chansey @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Fake Out  
- Whirlwind  
- Final Gambit  
- Soft-Boiled