Groudon @ Red Orb  
Ability: Drought  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Precipice Blades  
- Lava Plume  
- Stealth Rock  
- Roar  

Arceus-Steel @ Iron Plate  
Ability: Multitype  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Calm Mind  
- Earth Power  
- Recover  

Mewtwo-Mega-X @ Mewtwonite X  
Ability: Steadfast  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Taunt  
- Ice Punch  
- Drain Punch  
- Bulk Up  

Yveltal @ Life Orb  
Ability: Dark Aura  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
- Sucker Punch  
- Dark Pulse  
- Oblivion Wing  
- U-turn  

Giratina-Origin @ Griseous Orb  
Ability: Pressure  
EVs: 252 HP / 204 Def / 52 SpD  
Bold Nature  
- Draco Meteor  
- Toxic  
- Roar  
- Defog  

Naganadel @ Choice Specs  
Ability: Beast Boost  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Draco Meteor  
- Sludge Wave  
- Flamethrower  
- U-turn