Xerneas @ Metronome  
Ability: Pixilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Rash Nature  
- Boomburst  
- Anchor Shot  
- Imprison  
- Transform  

Aegislash @ Rocky Helmet  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Spectral Thief  
- Defog  
- Slack Off  
- Baton Pass  

Zygarde-Complete @ Toxic Orb  
Ability: Poison Heal  
Level: 99  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Substitute  
- Baton Pass  
- Baneful Bunker  
- Worry Seed  

Cresselia @ Iapapa Berry  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Destiny Bond  
- Topsy-Turvy  
- Recover  
- U-turn  

Blissey (F) @ Leftovers  
Ability: Prankster  
Shiny: Yes  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Glare  
- Substitute  
- Baton Pass  
- Recover  

Celesteela @ Rocky Helmet  
Ability: Triage  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Oblivion Wing  
- Taunt  
- Leech Seed  
- Tail Glow