Groudon @ Leftovers  
Ability: Drought  
EVs: 240 HP / 252 Atk / 16 Spe  
Adamant Nature  
- Swords Dance  
- Overheat  
- Precipice Blades  
- Stone Edge  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 252 HP / 204 Def / 52 SpD  
Impish Nature  
- Sacred Fire  
- Defog  
- Thunder Wave  
- Whirlwind  

Blissey (F) @ Heavy-Duty Boots  
Ability: Natural Cure  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
- Teleport  
- Calm Mind  
- Seismic Toss  
- Soft-Boiled  

Tyranitar @ Leftovers  
Ability: Sand Stream  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Stealth Rock  
- Rock Slide  
- Thunder Wave  
- Rest  

Tangrowth @ Rocky Helmet  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
- Grass Knot  
- Leech Seed  
- Earthquake  
- Sleep Powder  

Toxapex @ Rocky Helmet  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Recover  
- Haze  
- Toxic  
- Scald