Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Moonblast  
- Substitute  
- Hidden Power [Fire]  
- Endeavor  

Chansey @ Eviolite  
Ability: Natural Cure  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Seismic Toss  
- Counter  
- Toxic  
- Soft-Boiled  

Heatran @ Choice Scarf  
Ability: Flash Fire  
EVs: 252 SpA / 4 SpD / 252 Spe  
Quiet Nature  
IVs: 0 Atk  
- Eruption  
- Overheat  
- Flash Cannon  
- Earth Power