Mew @ Psychium Z  
Ability: Synchronize  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Psychic  
- Calm Mind  
- Soft-Boiled  
- Defog  

Clefable @ Leftovers  
Ability: Magic Guard  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Stealth Rock  
- Moonblast  
- Thunder Wave  
- Soft-Boiled  

Gastrodon @ Leftovers  
Ability: Storm Drain  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
- Scald  
- Earthquake  
- Recover  
- Clear Smog  

Latios-Mega (M) @ Latiosite  
Ability: Levitate  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
- Psychic  
- Ice Beam  
- Earthquake  
- Roost  

Magnezone @ Choice Scarf  
Ability: Magnet Pull  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Thunder Wave  
- Volt Switch  
- Flash Cannon  
- Hidden Power [Fire]  

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