Blissey (F) @ Shed Shell  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Serious Nature  
IVs: 0 Spe  
- Anchor Shot  
- Whirlwind  
- Perish Song  
- Spikes  

Audino-Mega @ Darkinium Z  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
IVs: 0 Spe  
- Parting Shot  
- Shore Up  
- Aromatherapy  
- Spectral Thief  

Scizor-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Will-O-Wisp  
- Defog  
- Shore Up  
- Haze  

Zygarde-Complete @ Shed Shell  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Bold Nature  
- Topsy-Turvy  
- Shore Up  
- Spikes  
- Whirlwind  

Gyarados-Mega @ Leftovers  
Ability: Shadow Tag  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Knock Off  
- Taunt  
- Shore Up  
- Toxic Spikes  

Slowbro-Mega @ Shed Shell  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Haze  
- Shore Up  
- Stealth Rock