Groudon-Primal @ Red Orb  
Ability: Desolate Land  
Shiny: Yes  
EVs: 252 HP / 252 SpD / 4 Spe  
Sassy Nature  
- Stomping Tantrum  
- Solar Beam  
- Incinerate  
- Fissure  

Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Insomnia  
Shiny: Yes  
EVs: 8 HP / 80 Def / 228 SpA / 192 Spe  
Naive Nature  
- Gravity  
- Blizzard  
- Thunder  
- Dynamic Punch  

Necrozma-Dusk-Mane @ Iron Ball  
Ability: Prism Armor  
EVs: 252 HP / 252 Atk / 4 SpA  
Brave Nature  
IVs: 0 Spe  
- Gyro Ball  
- Fling  
- Iron Defense  
- Stored Power  

Arceus @ Metronome  
Ability: Multitype  
Shiny: Yes  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Echoed Voice  
- Work Up  
- Thunder  
- Last Resort  

Marshadow @ Razor Claw  
Ability: Technician  
EVs: 252 Atk / 4 SpA / 252 Spe  
Hasty Nature  
- Work Up  
- Force Palm  
- Hidden Power [Ghost]  
- Rock Tomb  

Articuno @ Icium Z  
Ability: Snow Cloak  
Shiny: Yes  
EVs: 248 HP / 8 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Mind Reader  
- Sheer Cold  
- Mist  
- Hail