Yveltal @ Rocky Helmet  
Ability: Dark Aura  
EVs: 96 HP / 252 Def / 160 Spe  
Impish Nature  
IVs: 0 Atk  
- Defog  
- Toxic  
- Foul Play  
- Roost  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 56 Def / 200 SpD  
Relaxed Nature  
- Stealth Rock  
- Precipice Blades  
- Overheat  
- Toxic  

Stakataka @ Groundium Z  
Ability: Beast Boost  
EVs: 252 HP / 252 Atk / 4 SpD  
Lonely Nature  
IVs: 15 Def / 0 Spe  
- Gyro Ball  
- Earthquake  
- Stone Edge  
- Trick Room  

Lugia @ Leftovers  
Ability: Pressure  
EVs: 252 HP / 160 Def / 96 Spe  
Impish Nature  
IVs: 0 Atk  
- Substitute  
- Toxic  
- Ice Beam  
- Roost  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 4 Atk / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Leech Seed  
- Toxic  
- Gyro Ball  
- Power Whip  

Xerneas @ Choice Scarf  
Ability: Fairy Aura  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Defog  
- Aromatherapy  
- Endeavor