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

Zygarde @ Leftovers  
Ability: Power Construct  
EVs: 220 Atk / 56 SpD / 232 Spe  
Adamant Nature  
- Thousand Arrows  
- Dragon Tail  
- Dragon Dance  
- Substitute  

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

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 248 HP / 244 Def / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Ice Beam  
- Recover  
- Toxic  
- Defog  

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

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 108 Def / 252 SpA / 148 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Psyshock  
- Hidden Power [Rock]