Nihilego @ Rockium Z  
Ability: Beast Boost  
EVs: 168 HP / 92 SpA / 248 Spe  
Timid Nature  
IVs: 0 Atk  
- Power Gem  
- Acid Spray  
- Hidden Power [Ice]  
- Sludge Wave  

Landorus-Therian @ Flyinium Z  
Ability: Intimidate  
EVs: 56 HP / 40 Atk / 228 Def / 184 Spe  
Jolly Nature  
- Fly  
- Earthquake  
- Swords Dance  
- Rock Tomb  

Charizard-Mega-X @ Charizardite X  
Ability: Tough Claws  
EVs: 248 HP / 16 Atk / 144 SpD / 100 Spe  
Careful Nature  
- Will-O-Wisp  
- Flame Charge  
- Outrage  
- Flare Blitz