Garchomp-Mega @ Garchompite  
Ability: Sand Force  
EVs: 4 Atk / 252 SpA / 252 Spe  
Mild Nature  
- Draco Meteor  
- Stealth Rock  
- Earthquake  
- Fire Blast  

Tyranitar @ Assault Vest  
Ability: Sand Stream  
EVs: 224 HP / 32 Atk / 252 SpD  
Careful Nature  
- Rock Slide  
- Crunch  
- Pursuit  
- Earthquake  

Magearna @ Fairium Z  
Ability: Soul-Heart  
EVs: 248 HP / 28 Def / 224 SpA / 8 SpD  
Modest Nature  
- Calm Mind  
- Pain Split  
- Fleur Cannon  
- Thunderbolt  

Greninja-Ash (M) @ Choice Specs  
Ability: Battle Bond  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Spikes  
- Water Shuriken  
- Hydro Pump  
- Dark Pulse  

Serperior @ Choice Scarf  
Ability: Contrary  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Leaf Storm  
- Glare  
- Knock Off  
- Hidden Power [Fire]  

Tornadus-Therian @ Rocky Helmet  
Ability: Regenerator  
EVs: 252 HP / 4 Def / 252 Spe  
Timid Nature  
- Defog  
- U-turn  
- Hurricane  
- Knock Off