Gengar-Mega @ Gengarite  
Ability: Cursed Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Perish Song  
- Sludge Bomb  
- Hex  
- Substitute  

Zygarde @ Leftovers  
Ability: Power Construct  
EVs: 248 HP / 252 Def / 8 Spe  
Impish Nature  
- Thousand Arrows  
- Haze  
- Glare  
- Rest  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
IVs: 0 Spe  
- Spikes  
- Gyro Ball  
- Protect  
- Leech Seed  

Arceus-Dark @ Dread Plate  
Ability: Multitype  
EVs: 248 HP / 244 Def / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Will-O-Wisp  
- Defog  
- Recover  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 172 Def / 252 SpA / 84 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Thunder  
- Focus Blast  

Arceus-Poison @ Poisonium Z  
Ability: Multitype  
EVs: 248 HP / 8 Def / 156 SpD / 96 Spe  
Jolly Nature  
- Poison Jab  
- Will-O-Wisp  
- Stealth Rock  
- Recover