Gyarados @ Choice Band  
Ability: Intimidate  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Waterfall  
- Payback  
- Earthquake  
- Double-Edge  

Breloom @ Toxic Orb  
Ability: Poison Heal  
EVs: 80 HP / 176 Atk / 252 Spe  
Jolly Nature  
- Seed Bomb  
- Facade  
- Superpower  
- Swords Dance  

Blissey (F) @ Leftovers  
Ability: Natural Cure  
EVs: 252 Def / 120 SpA / 136 Spe  
Modest Nature  
IVs: 0 Atk  
- Flamethrower  
- Charm  
- Toxic  
- Stealth Rock  

Magneton @ Choice Scarf  
Ability: Magnet Pull  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 2 Atk / 30 Def  
- Thunderbolt  
- Thunder Wave  
- Flash Cannon  
- Hidden Power [Ice]  

Latias (F) @ Choice Band  
Ability: Levitate  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Outrage  
- Earthquake  
- Sucker Punch  
- Healing Wish  

Metagross @ Shuca Berry  
Ability: Clear Body  
EVs: 40 HP / 252 Atk / 216 Spe  
Adamant Nature  
- Agility  
- Meteor Mash  
- Earthquake  
- Explosion