Donphan @ Groundium Z  
Ability: Sturdy  
EVs: 252 Atk / 124 Def / 132 Spe  
Adamant Nature  
- Ice Shard  
- Earthquake  
- Bulldoze  
- Rock Tomb  

Dragonite @ Choice Scarf  
Ability: Multiscale  
EVs: 232 Atk / 44 SpA / 232 Spe  
Lonely Nature  
- Outrage  
- Iron Head  
- Superpower  
- Ice Beam  

Serperior @ Leftovers  
Ability: Contrary  
EVs: 248 HP / 4 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Leech Seed  
- Protect  
- Substitute  
- Leaf Storm