Steelix-Mega @ Steelixite  
Ability: Sturdy  
EVs: 252 HP / 252 Atk / 4 Def  
Brave Nature  
IVs: 0 Spe  
- Gyro Ball  
- Earthquake  
- Ice Fang  
- Stealth Rock  

Hydreigon @ Choice Scarf  
Ability: Levitate  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
- Dark Pulse  
- Draco Meteor  
- U-turn  
- Earth Power  

Arcanine @ Leftovers  
Ability: Intimidate  
EVs: 128 HP / 252 Atk / 128 Def  
Adamant Nature  
- Flare Blitz  
- Wild Charge  
- Extreme Speed  
- Morning Sun  

Crobat @ Life Orb  
Ability: Infiltrator  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Brave Bird  
- Super Fang  
- Haze  
- Leech Life  

Latias @ Psychium Z  
Ability: Levitate  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Defog  
- Calm Mind  
- Dragon Pulse  
- Psyshock  

Sylveon @ Sitrus Berry  
Ability: Pixilate  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Heal Bell  
- Wish  
- Hyper Voice  
- Calm Mind