Latios (M) @ Light Clay  
Ability: Levitate  
EVs: 252 HP / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Memento  
- Light Screen  
- Thunder Wave  
- Reflect  

Cloyster @ Lum Berry  
Ability: Skill Link  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Life Dew  
- Icicle Spear  
- Rock Blast  
- Shell Smash  

Polteageist @ Focus Sash  
Ability: Weak Armor  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Giga Drain  
- Shadow Ball  
- Stored Power  
- Shell Smash  

Vanilluxe @ Light Clay  
Ability: Snow Warning  
EVs: 252 HP / 4 Atk / 252 SpA  
Quiet Nature  
- Aurora Veil  
- Explosion  
- Freeze-Dry  
- Blizzard  

Blastoise-Mega @ Blastoisinite  
Ability: Mega Launcher  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Water Pulse  
- Dark Pulse  
- Aura Sphere  

Mew @ Rocky Helmet  
Ability: Synchronize  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Taunt  
- Stealth Rock  
- Spikes  
- Explosion