Rayquaza-Mega @ Focus Sash  
Ability: Delta Stream  
Level: 50  
EVs: 4 HP / 252 Atk / 252 Spe  
Naive Nature  
- Dragon Ascent  
- Aqua Tail  
- Overheat  
- Protect  

Xerneas @ Power Herb  
Ability: Fairy Aura  
Level: 50  
EVs: 204 HP / 100 Def / 148 SpA / 4 SpD / 52 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Dazzling Gleam  
- Geomancy  
- Protect  

Tapu Koko @ Tapunium Z  
Ability: Electric Surge  
Level: 50  
EVs: 92 HP / 164 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Thunderbolt  
- Nature's Madness  
- Taunt  
- Light Screen  

Amoonguss @ Aguav Berry  
Ability: Regenerator  
Level: 50  
EVs: 244 HP / 28 Def / 236 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Grass Knot  
- Clear Smog  
- Rage Powder  
- Spore  

Incineroar @ Figy Berry  
Ability: Intimidate  
Level: 50  
EVs: 236 HP / 252 SpD / 20 Spe  
Careful Nature  
- Flare Blitz  
- Snarl  
- U-turn  
- Fake Out  

Smeargle @ Choice Scarf  
Ability: Moody  
Level: 50  
EVs: 252 HP / 4 SpD / 252 Spe  
Jolly Nature  
- Fake Out  
- Spore  
- Wide Guard  
- Transform