Blastoise-Mega @ Blastoisinite
Ability: Mega Launcher
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Rapid Spin
- Aura Sphere
- Dark Pulse
- Ice Beam 

Shaymin @ Life Orb  
Ability: Natural Cure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Seed Flare  
- Earth Power  
- Psychic  
- Synthesis

Meloetta @ Normalium Z  
Ability: Serene Grace  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Celebrate
- Psychic  
- Focus Blast  
- Shadow Ball