Mewtwo-Mega-X @ Mewtwonite X  
Ability: Pressure  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naive Nature  
- Taunt  
- Low Kick  
- Stone Edge  
- Ice Beam  

Xerneas @ Fairium Z  
Ability: Fairy Aura  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Sleep Talk  
- Moonblast  
- Rest  
- Geomancy  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 180 HP / 252 SpA / 76 Spe  
Mild Nature  
- Toxic  
- Precipice Blades  
- Rock Tomb  
- Overheat  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Moonlight  
- Stealth Rock  
- Sunsteel Strike  
- Toxic  

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

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 64 Def / 192 Spe  
Timid Nature  
IVs: 0 Atk  
- Defog  
- Ice Beam  
- Recover  
- Judgment