Physical Wall (Spheal) @ Sablenite / Manectite  
Ability: Dauntless Shield  
EVs: 252 HP / 196 Def / 60 SpD  
Relaxed Nature  
IVs: 0 Atk  
- Scald  
- Strange Steam  
- Spikes / Stealth Rock  
- Slack Off

Sand Special Wall (Spheal) @ Tyranitarite  
Ability: Water Absorb / Sap Sipper / Sand Stream
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
- Stealth Rock
- Scorching Sands
- Shore Up
- Spectral Thief