Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Rock Polish  
- Moonblast  
- Diamond Storm  
- Earth Power  

Victini @ Choice Band  
Ability: Victory Star  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- V-create  
- Bolt Strike  
- U-turn  
- Brick Break  

Celesteela @ Leftovers  
Ability: Beast Boost  
EVs: 252 HP / 4 Atk / 252 Def  
Relaxed Nature  
- Leech Seed  
- Protect  
- Heavy Slam  
- Flamethrower  

Landorus-Therian (M) @ Aguav Berry  
Ability: Intimidate  
EVs: 232 HP / 140 Def / 28 SpD / 108 Spe  
Jolly Nature  
- Stealth Rock  
- U-turn  
- Earthquake  
- Stone Edge  

Serperior @ Choice Scarf  
Ability: Contrary  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Leaf Storm  
- Glare  
- Defog  
- Knock Off  

Gastrodon @ Leftovers  
Ability: Storm Drain  
EVs: 248 HP / 8 Def / 252 SpD  
Sassy Nature  
- Scald  
- Recover  
- Clear Smog  
- Earthquake