Palkia @ Choice Scarf  
Ability: Pressure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hydro Pump  
- Spacial Rend  
- Ice Beam  
- Fire Blast  

Necrozma-Dusk-Mane @ Ultranecrozium Z  
Ability: Prism Armor  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Sunsteel Strike  
- Photon Geyser  
- Stone Edge  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 252 SpD / 4 Spe  
Sassy Nature  
- Stealth Rock  
- Toxic  
- Precipice Blades  
- Overheat  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 132 Def / 124 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Ice Beam  
- Recover  
- Defog  

Ho-Oh @ Leftovers  
Ability: Regenerator  
EVs: 252 HP / 204 Def / 52 SpD  
Impish Nature  
- Sacred Fire  
- Recover  
- Toxic  
- Brave Bird  

Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 252 SpA / 4 SpD / 252 Spe  
Hasty Nature  
- Diamond Storm  
- Moonblast  
- Earth Power  
- Heal Bell