Camerupt-Mega @ Life Orb  
Ability: Sheer Force  
EVs: 248 HP / 8 Atk / 252 SpA  
Quiet Nature  
IVs: 0 Spe  
- Flamethrower  
- Earth Power  
- Rock Slide  
- Hidden Power [Ice]  

Mawile-Mega @ Darkinium Z  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 8 SpD  
Brave Nature  
IVs: 0 Spe  
- Play Rough  
- Sucker Punch  
- Knock Off  
- Swords Dance  

Diancie-Mega @ Focus Sash  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 4 SpD
Quiet Nature  
- Explosion  
- Protect  
- Stealth Rock  
- Trick Room  

Necrozma-Dusk-Mane @ Weakness Policy  
Ability: Prism Armor  
EVs: 252 HP / 252 Atk / 4 Def  
Brave Nature  
IVs: 0 Spe  
- Sunsteel Strike  
- Photon Geyser  
- Swords Dance  
- Trick Room  

Cresselia @ Mental Herb  
Ability: Levitate  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 0 Atk  
- Ice Beam  
- Moonlight  
- Trick Room  
- Lunar Dance  

Heracross-Mega @ Life Orb  
Ability: Skill Link  
EVs: 248 HP / 252 Atk / 8 SpD  
Brave Nature  
IVs: 0 Spe  
- Close Combat  
- Pin Missile  
- Rock Blast  
- Swords Dance