silver surfer (Empoleon) @ Rocky Helmet  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- U-turn  
- Topsy-Turvy  
- Shore Up  
- Defog  

scrambler (Blissey) @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Whirlwind  
- Final Gambit  
- Heal Order  
- Switcheroo  

sword to the moon (Rayquaza-Mega) @ Leftovers  
Ability: Triage  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Volt Switch  
- Tail Glow  
- Secret Sword  
- Oblivion Wing  

surface (Zygarde-Complete) @ Groundium Z  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Haze  
- Encore  
- Thousand Waves  
- Recover  

sayori (Xerneas) @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Moonblast  
- Spikes  
- Quiver Dance  
- Strength Sap  

silence (Shedinja) @ Protective Pads  
Ability: Sturdy  
EVs: 97 HP / 252 Atk  
Brave Nature  
IVs: 4 HP / 0 Def / 20 SpA / 0 SpD / 0 Spe  
- Endeavor  
- Stealth Rock  
- Extreme Speed  
- U-turn