Volcanion @ Choice Scarf  
Ability: Water Absorb  
EVs: 236 SpA / 20 SpD / 252 Spe  
Hasty Nature  
IVs: 0 Atk / 0 Def  
- Overheat  
- Steam Eruption  
- Sludge Bomb  
- Hidden Power [Ice]  

Metagross-Mega @ Metagrossite  
Ability: Tough Claws  
Shiny: Yes  
EVs: 252 HP / 40 Atk / 216 SpD  
Adamant Nature  
- Meteor Mash  
- Power-Up Punch  
- Bulldoze  
- Bullet Punch  

Gardevoir-Mega @ Gardevoirite  
Ability: Trace  
EVs: 248 HP / 200 Def / 44 SpA / 16 Spe  
Calm Nature  
IVs: 0 Atk  
- Hyper Beam  
- Psychic  
- Icy Wind  
- Encore