Zygarde @ Groundium Z  
Ability: Power Construct  
EVs: 252 HP / 128 Atk / 128 Def  
Impish Nature  
- Bulldoze  
- Thousand Arrows  
- Coil  
- Rest  

Magearna @ Fairium Z  
Ability: Soul-Heart  
EVs: 252 HP / 40 Def / 216 SpD  
Modest Nature  
IVs: 0 Atk  
- Calm Mind  
- Iron Defense  
- Pain Split  
- Fleur Cannon  

Naganadel @ Choice Specs  
Ability: Beast Boost  
EVs: 192 SpA / 100 SpD / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Draco Meteor  
- Sludge Wave  
- Fire Blast  
- Hidden Power [Rock]