Toxapex @ Rocky Helmet  
Ability: Regenerator  
EVs: 252 HP / 132 Def / 124 SpD  
Bold Nature  
IVs: 0 Atk  
- Toxic Spikes  
- Recover  
- Toxic  
- Haze  

Gliscor @ Toxic Orb  
Ability: Poison Heal  
EVs: 244 HP / 52 Def / 100 SpD / 112 Spe  
Jolly Nature  
- Earthquake  
- Defog  
- Toxic  
- Roost  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 24 Def / 232 SpD  
Careful Nature  
- Spikes  
- Knock Off  
- Leech Seed  
- Power Whip  

Volcarona @ Heavy-Duty Boots  
Ability: Flame Body  
EVs: 80 HP / 176 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Quiver Dance  
- Roost  
- Psychic  
- Flamethrower  

Latios-Mega (M) @ Latiosite  
Ability: Levitate  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Mystical Fire  
- Psychic  
- Recover  
- Ice Beam  

Clefable @ Leftovers  
Ability: Magic Guard  
EVs: 252 HP / 200 Def / 56 SpD  
Calm Nature  
IVs: 0 Atk  
- Stealth Rock  
- Thunder Wave  
- Soft-Boiled  
- Moonblast