Ho-Oh @ Choice Band  
Ability: Regenerator  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Brave Bird  
- Earthquake  
- Sacred Fire  
- Toxic  

Arceus-Poison @ Poisonium Z  
Ability: Multitype  
EVs: 248 HP / 80 Def / 84 SpD / 96 Spe  
Jolly Nature  
- Stealth Rock  
- Poison Jab  
- Recover  
- Will-O-Wisp  

Rayquaza-Mega @ Choice Band  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Dragon Ascent  
- V-create  
- Earthquake  
- Extreme Speed  

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

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

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