Metagross-Mega @ Metagrossite  
Ability: Tough Claws  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Zen Headbutt  
- Earthquake  
- Pursuit  
- Bullet Punch  

Keldeo @ Mystic Water  
Ability: Justified  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hydro Pump  
- Secret Sword  
- Scald  
- Taunt  

Garchomp @ Rocky Helmet  
Ability: Rough Skin  
EVs: 232 HP / 24 Def / 252 Spe  
Jolly Nature  
- Earthquake  
- Rock Slide  
- Toxic  
- Stealth Rock  

Thundurus (M) @ Leftovers  
Ability: Prankster  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk / 30 Def  
- Volt Switch  
- Hidden Power [Ice]  
- Focus Blast  
- Thunder Wave  

Serperior @ Rocky Helmet  
Ability: Contrary  
EVs: 112 HP / 144 SpA / 252 Spe  
Timid Nature  
IVs: 1 Atk / 30 Def / 30 SpD / 30 Spe  
- Leaf Storm  
- Hidden Power [Rock]  
- Glare  
- Taunt  

Latias (F) @ Choice Scarf  
Ability: Levitate  
EVs: 248 HP / 8 Def / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psyshock  
- Trick  
- Defog  
- Healing Wish