Blissey @ Heavy-Duty Boots  
Ability: Natural Cure  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
- Teleport  
- Soft-Boiled  
- Seismic Toss  
- Toxic  

Latias @ Latiasite  
Ability: Levitate  
EVs: 248 HP / 8 Def / 252 Spe  
Timid Nature  
- Calm Mind  
- Psyshock  
- Mystical Fire  
- Roost