Rayquaza-Mega @ Life Orb  
Ability: Delta Stream  
EVs: 252 Atk / 4 Def / 252 Spe  
Naive Nature  
- Dragon Ascent  
- V-create  
- Extreme Speed  
- Draco Meteor  

Marshadow @ Life Orb  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Spectral Thief  
- Shadow Sneak  
- Close Combat  
- Pursuit  

Xerneas @ Choice Scarf  
Ability: Fairy Aura  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Thunder Wave  
- Aromatherapy  
- Defog  

Arceus-Dark @ Dread Plate  
Ability: Multitype  
EVs: 248 HP / 236 Def / 24 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Recover  
- Defog  
- Toxic  

Arceus-Poison @ Poisonium Z  
Ability: Multitype  
EVs: 248 HP / 8 Atk / 4 Def / 152 SpD / 96 Spe  
Jolly Nature  
- Stealth Rock  
- Poison Jab  
- Recover  
- Will-O-Wisp  

Kyogre-Primal @ Blue Orb  
Ability: Primordial Sea  
EVs: 248 HP / 244 Def / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Ice Beam  
- Scald  
- Rest