Groudon @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Thousand Arrows  
- Glare  
- Spikes  
- Swords Dance  

Zamazenta-Crowned @ Expert Belt  
Ability: Tough Claws  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Sunsteel Strike  
- Close Combat  
- Wicked Blow  
- Glacial Lance  

Heatran @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- U-turn  
- Nuzzle  
- Spectral Thief  
- Circle Throw  

Giratina @ Rocky Helmet  
Ability: Fur Coat  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Topsy-Turvy  
- Core Enforcer  
- Teleport  
- Recover  

Yveltal @ Sharp Beak  
Ability: Aerilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Boomburst  
- V-create  
- Rapid Spin  
- Strength Sap  

Kyogre @ Light Clay  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Recover  
- Haze  
- Light Screen  
- Reflect