Steelix-Mega @ Shed Shell  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Will-O-Wisp  
- Spectral Thief  
- Shore Up  
- Stealth Rock  

Yveltal @ Leftovers  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Spectral Thief  
- Twineedle  
- Anchor Shot  
- Recover  

Audino-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
IVs: 30 Spe  
- Trick  
- Defog  
- Aromatherapy  
- Soft-Boiled  

Zygarde-Complete @ Leftovers  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Destiny Bond  
- Haze  
- Thousand Waves  
- Milk Drink  

Slowbro-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Spikes  
- Knock Off  
- Strength Sap  
- Heal Order  

Blissey (F) @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Trick  
- Perish Song  
- Toxic Spikes  
- Roost