Magearna @ Fairium Z  
Ability: Soul-Heart  
EVs: 248 HP / 200 Def / 12 SpA / 48 SpD  
Bold Nature  
IVs: 0 Atk  
- Fleur Cannon  
- Iron Defense  
- Pain Split  
- Heart Swap  

Aggron @ Aggronite  
Ability: Sturdy  
EVs: 240 HP / 204 Atk / 64 Def  
Relaxed Nature  
IVs: 19 Spe  
- Heavy Slam  
- Head Smash  
- Fire Punch  
- Metal Burst  

Mamoswine @ Choice Band  
Ability: Thick Fat  
EVs: 204 Atk / 68 SpD / 236 Spe  
Adamant Nature  
- Ice Shard  
- Earthquake  
- Icicle Crash  
- Rock Slide