DEBASER (Giratina) @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Scald  
- Worry Seed  
- Spikes  
- Baneful Bunker  

Magearna @ Leftovers  
Ability: Primordial Sea  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Knock Off  
- U-turn  
- Topsy-Turvy  
- Roost  

Groudon @ Soft Sand  
Ability: Mold Breaker  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Thousand Arrows  
- Glare  
- Stealth Rock  
- Strength Sap  

Chansey @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Infestation  
- Court Change  
- Aromatherapy  
- Shore Up  

Eternatus @ Black Sludge  
Ability: Teravolt  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Core Enforcer  
- Sludge Bomb  
- Blue Flare  
- Nasty Plot  

Xerneas @ Pixie Plate  
Ability: Pixilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Rash Nature  
- Boomburst  
- Extreme Speed  
- Rapid Spin  
- Strength Sap