Heracross-Mega @ Heracronite  
Ability: Guts  
EVs: 64 HP / 252 Atk / 192 Spe  
Adamant Nature  
- Substitute  
- Close Combat  
- Bullet Seed  
- Rock Blast  

Tapu Bulu @ Choice Band  
Ability: Grassy Surge  
EVs: 72 HP / 252 Atk / 184 Spe  
Adamant Nature  
- Horn Leech  
- Wood Hammer  
- Superpower  
- Stone Edge  

Thundurus-Therian (M) @ Rocky Helmet  
Ability: Volt Absorb  
EVs: 240 HP / 16 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Defog  
- Thunder Wave  
- Volt Switch  
- Hidden Power [Ice]  

Slowbro @ Psychium Z  
Ability: Regenerator  
EVs: 248 HP / 76 Def / 176 SpA / 8 Spe  
Modest Nature  
IVs: 0 Atk  
- Slack Off  
- Scald  
- Future Sight  
- Thunder Wave  

Heatran @ Leftovers  
Ability: Flash Fire  
EVs: 248 HP / 252 SpD / 8 Spe  
Calm Nature  
IVs: 0 Atk  
- Stealth Rock  
- Lava Plume  
- Protect  
- Roar  

Serperior @ Choice Scarf  
Ability: Contrary  
EVs: 112 HP / 144 SpA / 252 Spe  
Timid Nature  
- Leaf Storm  
- Knock Off  
- Defog  
- Glare