Mewtwo-Mega-Y @ Terrain Extender  
Ability: Psychic Surge  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psycho Boost  
- Psystrike  
- Moongeist Beam  
- Volt Switch  

Mewtwo-Mega-Y @ Pixie Plate  
Ability: Contrary  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk 
- Psycho Boost  
- Overheat  
- Judgment  
- Lovely Kiss  

Tyranitar-Mega @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Diamond Storm  
- Shore Up  
- Pursuit  
- Topsy-Turvy  

Registeel @ Safety Goggles  
Ability: Prankster  
Level: 99  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Careful Nature  
IVs: 0 Spe  
- Haze  
- Shore Up  
- Stealth Rock  
- U-turn  

Kartana @ Sitrus Berry  
Ability: Unburden  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Belly Drum  
- Sunsteel Strike  
- Horn Leech  
- Sacred Fire  

Kyogre-Primal @ Safety Goggles  
Ability: Fur Coat  
Shiny: Yes  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
- Revelation Dance  
- Topsy-Turvy  
- Shore Up  
- U-turn