Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Pressure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Psystrike  
- Fire Blast  
- Ice Beam  

Necrozma-Dusk-Mane @ Ultranecrozium Z  
Ability: Prism Armor  
EVs: 252 Atk / 32 Def / 224 Spe  
Jolly Nature  
- Earthquake  
- Swords Dance  
- Photon Geyser  
- Brick Break  

Arceus-Fairy @ Pixie Plate  
Ability: Multitype  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Judgment  
- Earth Power  
- Recover  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 56 Def / 200 SpD / 4 Spe  
Careful Nature  
- Stealth Rock  
- Roar  
- Precipice Blades  
- Toxic  

Giratina @ Leftovers  
Ability: Pressure  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Defog  
- Toxic  
- Roar  
- Rest  

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