Aegislash @ Leftovers  
Ability: Stance Change  
EVs: 252 HP / 4 Atk / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Toxic  
- King's Shield  
- Gyro Ball  
- Shadow Sneak  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 8 Atk / 252 SpD  
Careful Nature  
- Stealth Rock  
- Precipice Blades  
- Roar  
- Fire Punch  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 184 HP / 252 SpA / 72 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Hidden Power [Fire]  
- Thunder  

Salamence-Mega @ Salamencite  
Ability: Intimidate  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Double-Edge  
- Roost  
- Earthquake  

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

Mewtwo @ Psychium Z  
Ability: Pressure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Psystrike  
- Ice Beam  
- Thunderbolt