Necrozma-Dusk-Mane @ Ultranecrozium Z  
Ability: Prism Armor  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Swords Dance  
- Earthquake  
- Photon Geyser  
- Outrage  

Yveltal  
Ability: Dark Aura  
IVs: 0 Atk  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
- Stealth Rock  
- Toxic  
- Precipice Blades  
- Overheat  

Magearna @ Leftovers  
Ability: Soul-Heart  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Fleur Cannon  
- Heal Bell  
- Pain Split  
- Heart Swap  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 164 Def / 92 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Ice Beam  
- Toxic  
- Recover  

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