Mewtwo-Mega-X @ Mewtwonite X  
Ability: Steadfast  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naive Nature  
- Low Kick  
- Knock Off  
- Taunt  
- Ice Beam  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
Tera Type: Ground  
EVs: 248 HP / 36 Atk / 84 Def / 96 SpD / 44 Spe  
Adamant Nature  
- Swords Dance  
- Precipice Blades  
- Heat Crash  
- Spikes  

Eternatus @ Life Orb  
Ability: Pressure  
Tera Type: Dragon  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Sludge Bomb  
- Fire Blast  
- Recover  

Garganacl @ Leftovers  
Ability: Purifying Salt  
Tera Type: Water  
EVs: 252 HP / 24 Def / 232 SpD  
Careful Nature  
IVs: 18 Spe  
- Stealth Rock  
- Protect  
- Salt Cure  
- Recover  

Yveltal @ Choice Scarf  
Ability: Dark Aura  
EVs: 80 HP / 204 Def / 224 Spe  
Jolly Nature  
- Foul Play  
- U-turn  
- Defog  
- Sucker Punch  

Arceus-Fairy @ Pixie Plate  
Ability: Multitype  
Tera Type: Ground  
EVs: 248 HP / 36 Def / 96 SpA / 32 SpD / 96 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Recover  
- Judgment  
- Earth Power