Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 248 Def / 8 Spe  
Impish Nature  
- Morning Sun  
- Sunsteel Strike  
- Thunder Wave  
- Stealth Rock  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 100 Def / 144 SpD / 16 Spe  
Careful Nature  
- Defog  
- Protect  
- Whirlwind  
- Sacred Fire  

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

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 248 HP / 136 Def / 124 Spe  
Bold Nature  
IVs: 0 Atk  
- Refresh  
- Judgment  
- Ice Beam  
- Recover  

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

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 248 HP / 156 Def / 104 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Calm Mind  
- Recover  
- Refresh