Abomasnow-Mega (M) @ Abomasite  
Ability: Snow Warning  
EVs: 224 HP / 192 Atk / 92 Spe  
Adamant Nature  
- Swords Dance  
- Avalanche  
- Earthquake  
- Ice Shard  

 
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  

 
Tornadus-Therian @ Rocky Helmet  
Ability: Regenerator  
EVs: 248 HP / 8 Def / 252 Spe  
Timid Nature  
- Hurricane  
- Knock Off  
- U-turn  
- Defog  

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

 
Toxapex @ Black Sludge  
Ability: Regenerator  
EVs: 252 HP / 124 Def / 132 SpD  
Calm Nature  
IVs: 0 Atk  
- Scald  
- Haze  
- Recover  
- Toxic  

 
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