Diancie-Mega @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Head Smash  
- Light of Ruin  
- Mind Blown  
- Pain Split  

Swampert-Mega @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- U-turn  
- Knock Off  
- Nuzzle  
- Spectral Thief  

Chansey (F) @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
IVs: 0 Atk  
- Topsy-Turvy  
- Rapid Spin  
- Parting Shot  
- Recover  

Yveltal @ Sharp Beak  
Ability: Triage  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Tail Glow  
- Oblivion Wing  
- Revelation Dance  
- Rapid Spin  

Zygarde-Complete @ Groundium Z  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Thousand Waves  
- Strength Sap  
- Entrainment  
- Haze  

Kartana @ Choice Scarf  
Ability: Tough Claws  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Sunsteel Strike  
- Power Whip  
- Trick  
- V-create