Greninja @ Choice Specs  
Ability: Protean  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hydro Cannon  
- Hidden Power [Steel]  
- Ice Beam  
- Blizzard  

Venusaur-Mega @ Venusaurite  
Ability: Chlorophyll  
EVs: 176 HP / 96 SpA / 236 Spe  
Timid Nature  
IVs: 0 Atk  
- Sleep Powder  
- Sludge Bomb  
- Petal Dance  
- Hidden Power [Fire]  

Gyarados-Mega @ Gyaradosite  
Ability: Mold Breaker  
EVs: 40 HP / 248 Atk / 220 Spe  
Jolly Nature  
- Taunt  
- Crunch  
- Outrage  
- Bounce