Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Earth Power  
- Diamond Storm  
- Moonblast  
- Hidden Power [Fire]  

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

Mew @ Leftovers  
Ability: Synchronize  
EVs: 248 HP / 252 Def / 8 Spe  
Bold Nature  
IVs: 0 Atk  
- Will-O-Wisp  
- Stealth Rock  
- Roost  
- Psychic  

Skarmory @ Shed Shell  
Ability: Sturdy  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
- Spikes  
- Roost  
- Counter  
- Iron Head  

Tentacruel @ Black Sludge  
Ability: Liquid Ooze  
EVs: 248 HP / 8 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Toxic Spikes  
- Scald  
- Rapid Spin  
- Sludge Bomb  

Hippowdon @ Groundium Z  
Ability: Sand Stream  
EVs: 220 HP / 80 SpD / 208 Spe  
Jolly Nature  
- Earthquake  
- Slack Off  
- Whirlwind  
- Fire Fang