Hydreigon @ Choice Scarf  
Ability: Levitate  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Dark Pulse  
- Dynamax Cannon  
- Fire Blast  
- U-turn

Hydreigon @ Life Orb / Metronome
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Nasty Plot
- Dark Pulse
- Flash Cannon / Dynamax Cannon
- Dynamax Cannon / Fire Blast / Earth Power