Blissey @ Heavy-Duty Boots / Utility Umbrella / Leftovers
Ability: Natural Cure  
Tera Type: Dark / Grass 
EVs: 4 HP / 252 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Stealth Rock / Trick / Thunder Wave
- Seismic Toss  
- Soft-Boiled  
- Shadow Ball / Thunder Wave