Magearna @ Electrium Z  
Ability: Soul-Heart  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Shift Gear  
- Ice Beam  
- Thunderbolt  
- Flash Cannon  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 4 Atk / 252 SpD  
Sassy Nature  
- Toxic  
- Precipice Blades  
- Stone Edge  
- Overheat  

Toxapex @ Rocky Helmet  
Ability: Regenerator  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Haze  
- Recover  
- Toxic Spikes  

Yveltal @ Choice Scarf  
Ability: Dark Aura  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
- U-turn  
- Dark Pulse  
- Oblivion Wing  
- Foul Play  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 252 HP / 64 Def / 192 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Recover  
- Ice Beam  
- Defog  

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