Landorus-Therian @ Power Herb  
Ability: Intimidate  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature
- Fly  
- Earthquake  
- Rock Slide  
- Protect  

Latios @ Dragon Gem  
Ability: Levitate  
EVs: 4 HP / 252 SpA / 252 Spe  
Modest Nature  
IVs: 2 Atk / 30 SpA / 30 Spe  
- Draco Meteor  
- Psychic  
- Hidden Power [Fire]  
- Protect  

Thundurus @ Sitrus Berry  
Ability: Prankster  
EVs: 252 HP / 24 Def / 16 SpA / 168 SpD / 48 Spe  
Calm Nature  
IVs: 2 Atk / 30 Def  
- Thunderbolt  
- Thunder Wave  
- Hidden Power [Ice] / Taunt
- Protect  

Metagross @ Leftovers / Steel Gem 
Ability: Clear Body  
EVs: 252 HP / 188 Atk / 60 SpD / 8 Spe  
Adamant Nature  
- Meteor Mash  
- Hammer Arm  
- Bullet Punch  
- Protect