Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly / Timid Nature  
- Stealth Rock  
- Substitute  
- Endeavor  
- Diamond Storm / Moonblast  

Volcarona @ Leftovers  
Ability: Swarm  
EVs: 80 HP / 36 Def / 164 SpA / 228 Spe  
Modest Nature  
IVs: 0 Atk  
- Substitute  
- Quiver Dance  
- Flamethrower  
- Bug Buzz  

Serperior @ Rocky Helmet  
Ability: Contrary  
EVs: 40 HP / 216 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Leaf Storm  
- Taunt  
- Glare  
- Defog  

Magearna @ Fairium Z  
Ability: Soul-Heart  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Shift Gear  
- Fleur Cannon  
- Aura Sphere  

Suicune @ Leftovers  
Ability: Pressure  
EVs: 252 HP / 40 SpD / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Scald  
- Substitute  
- Calm Mind  
- Protect  

Cresselia (F) @ Choice Scarf  
Ability: Levitate  
EVs: 252 HP / 200 Def / 56 Spe  
Bold Nature  
IVs: 0 Atk  
- Ice Beam  
- Thunder Wave  
- Lunar Dance  
- Trick