Hydreigon Moveset?

[poopnate]

I've finally caught the Deino I want (breed, really, but I don't care. I still have it). Decent/Excellent IVs and a Mild Nature. I'm missing Dark Pulse, but I can live without it. All I need now is a good Moveset. Any ideas? I plan on using him in the Battle Subway, though he might replace Kyurem on my E4 Grinding Team (with access to STAB Dark-Type Attacks and immunity to Psychic, he's much better IMHO). My Battle Subway team is as follows:

Meinshao @ Wide Lens

Hi-Jump Kick
Swords Dance
Stone Edge
U-Turn


Emboar @ Razor Claw (will probably replace with a better item when I get some BP)

Wild Charge
Flame Charge
Hammer Arm
Earthquake

Hydreigon @ ???

Obviously, I don't have a Moveset for him. What should I get that would give me the most coverage on the Battle Subway?

EDIT: I'm running with 4 HP, 252 SpAtt., 252 Speed

 

[deoxys121]

I've never used a Hydreigon before, but looking at its stats, I will suggest the following moveset:
@Blackglasses to make up for lower Attack than Sp. Atk
Dragon Pulse
Crunch
Flash Cannon or Flamethrower
Surf

 

[Calamity]

Hydreigon @ Choice Scarf
Modest/Timid Nature is usually the best for him but Mild will do.
252 Sp.Atk | 252 Spe | 4 Hp
Dragon pulse / Draco Meteor
Flamethrower
Focus Blast
Dark pulse is reccomended for the STAB but Surf is probably next best option.

 

[poopnate]

Hydreigon @ Choice Scarf
Modest/Timid Nature is usually the best for him but Mild will do.
252 Sp.Atk | 252 Spe | 4 Hp
Dragon pulse / Draco Meteor
Flamethrower
Focus Blast
Dark pulse is reccomended for the STAB but Surf is probably next best option.

I went with Mild for a reason. The ONLY Ditto that I have with more than 20 in all his IVs is my Mild one. It still raises Sp.Att, so I figured it would be fine. I'm not using it in Competitive battles, so I can usually OHKO anything I can outrun. I don't really need to worry about Defense in that situation. :P