Pelipper @ Damp Rock  
Ability: Drizzle  
EVs: 248 HP / 176 Def / 8 SpA / 76 SpD  
Relaxed Nature  
IVs: 3 Spe  
- Defog  
- Roost  
- Hurricane  
- U-turn  

Swampert-Mega @ Swampertite  
Ability: Damp  
EVs: 228 HP / 56 Atk / 224 Spe  
Adamant Nature  
- Stealth Rock  
- Waterfall  
- Earthquake  
- Toxic  

Manaphy @ Waterium Z  
Ability: Hydration  
EVs: 136 HP / 252 SpA / 120 Spe  
Modest Nature  
IVs: 0 Atk  
- Rest  
- Tail Glow  
- Surf  
- Ice Beam  

Volcanion @ Choice Scarf  
Ability: Water Absorb  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Steam Eruption  
- Overheat  
- Sludge Wave  
- Hidden Power [Grass]  

Magearna @ Iapapa Berry  
Ability: Soul-Heart  
EVs: 248 HP / 72 Def / 188 SpD  
Calm Nature  
IVs: 0 Atk / 30 Spe  
- Fleur Cannon  
- Energy Ball  
- Volt Switch  
- Thunder Wave  

Tornadus-Therian @ Eject Button  
Ability: Regenerator  
EVs: 240 HP / 64 Def / 204 Spe  
Timid Nature  
- Defog  
- Hurricane  
- Knock Off  
- U-turn