Mewtwo-Mega-X @ Mewtwonite X  
Ability: Pressure  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Low Kick  
- Bulk Up  
- Iron Tail  
- Zen Headbutt  

Deoxys-Speed @ Focus Sash  
Ability: Pressure  
EVs: 248 HP / 8 Atk / 252 Spe  
Jolly Nature  
- Stealth Rock  
- Magic Coat  
- Spikes  
- Knock Off  

Yveltal @ Choice Scarf  
Ability: Dark Aura  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- U-turn  
- Oblivion Wing  
- Dark Pulse  
- Foul Play  

Xerneas @ Fairium Z  
Ability: Fairy Aura  
EVs: 252 HP / 194 Def / 62 Spe  
Bold Nature  
IVs: 0 Atk  
- Geomancy  
- Ingrain  
- Rest  
- Moonblast  

Groudon-Primal @ Red Orb  
Ability: Drought  
EVs: 168 HP / 240 Atk / 36 SpD / 64 Spe  
Adamant Nature  
- Rock Polish  
- Earthquake  
- Swords Dance  
- Stone Edge  

Marshadow @ Life Orb  
Ability: Technician  
EVs: 252 Atk / 4 SpA / 252 Spe  
Hasty Nature  
- Spectral Thief  
- Close Combat  
- Shadow Sneak  
- Hidden Power [Ice]