Mewtwo @ Leftovers  
Ability: Pressure  
EVs: 248 HP / 8 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psystrike  
- Will-O-Wisp  
- Taunt  
- Recover  

Groudon @ Leftovers  
Ability: Drought  
EVs: 248 HP / 108 Atk / 152 Spe  
Adamant Nature  
- Swords Dance  
- Earthquake  
- Heat Crash  
- Rock Tomb  

Marshadow @ Life Orb  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Spectral Thief  
- Low Kick  
- Shadow Sneak  
- Ice Punch  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 216 SpD / 40 Spe  
Careful Nature  
- Iron Head  
- Stealth Rock  
- Knock Off  
- Moonlight  

Eternatus @ Power Herb  
Ability: Pressure  
EVs: 252 HP / 40 SpD / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Cosmic Power  
- Dragon Pulse  
- Meteor Beam  
- Recover  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 72 Def / 188 SpD  
Careful Nature  
- U-turn  
- Roost  
- Knock Off  
- Defog