Palkia @ Lustrous Orb  
Ability: Swift Swim  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Water Spout  
- Core Enforcer  
- Tail Glow  
- Roost  

Gardevoir-Mega @ Choice Specs  
Ability: Desolate Land  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Blue Flare  
- Moonblast  
- Stealth Rock  
- Leech Seed  

Sableye-Mega @ Damp Rock  
Ability: Drizzle  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- U-turn  
- Heal Order  
- Core Enforcer  
- Whirlwind  

Ho-Oh @ Leftovers  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Soft-Boiled  
- Spectral Thief  
- U-turn  
- Defog  

Zekrom @ Draco Plate  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Relaxed Nature  
- Haze  
- Judgment  
- Shore Up  
- Bolt Strike  

Absol-Mega @ Choice Scarf  
Ability: Mold Breaker  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Adamant Nature  
- Knock Off  
- Pursuit  
- Trick  
- Volt Switch