I am become death (Diancie) @ Weakness Policy  
Ability: Clear Body  
EVs: 252 HP / 140 Atk / 116 SpD  
Brave Nature  
IVs: 0 Spe  
- Diamond Storm  
- Body Press  
- Trick Room  
- Protect  

DestroyerOfWorlds (Amoonguss) @ Sitrus Berry  
Ability: Regenerator  
Level: 99  
EVs: 232 HP / 88 Def / 188 SpD  
Sassy Nature  
IVs: 0 Spe  
- Rage Powder  
- Spore  
- Pollen Puff  
- Protect  

Genesect @ Choice Scarf  
Ability: Download  
EVs: 252 Atk / 4 SpA / 252 Spe  
Hasty Nature  
- U-turn  
- Iron Head  
- Ice Beam  
- Flamethrower  

Heatran @ Charcoal  
Ability: Flash Fire  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Heat Wave  
- Earth Power  
- Eruption  
- Protect  

Zygarde @ Choice Band  
Ability: Aura Break  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Thousand Arrows  
- Extreme Speed  
- Superpower  
- Toxic  

Zapdos @ Sitrus Berry  
Ability: Static  
EVs: 240 HP / 64 SpA / 168 SpD / 36 Spe  
Calm Nature  
IVs: 0 Atk  
- Thunderbolt  
- Eerie Impulse  
- Tailwind  
- Roost