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

 
Crawdaunt @ Choice Band  
Ability: Adaptability  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Knock Off  
- Crabhammer  
- Crunch  
- Aqua Jet  

 
Heatran @ Steelium Z  
Ability: Flash Fire  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Magma Storm  
- Earth Power  
- Flash Cannon  
- Stealth Rock  

 
Rotom-Wash @ Leftovers  
Ability: Levitate  
EVs: 248 HP / 164 Def / 88 SpD / 8 Spe  
Calm Nature  
IVs: 0 Atk  
- Hydro Pump  
- Volt Switch  
- Pain Split  
- Will-O-Wisp  

 
Magearna @ Assault Vest  
Ability: Soul-Heart  
EVs: 248 HP / 8 Def / 252 SpD  
Sassy Nature  
IVs: 6 Spe  
- Volt Switch  
- Fleur Cannon  
- Focus Blast  
- Iron Head  

 
Landorus-Therian @ Choice Scarf  
Ability: Intimidate  
EVs: 232 Atk / 68 Def / 208 Spe  
Jolly Nature  
- Earthquake  
- U-turn  
- Explosion  
- Defog