Draco Meteor/Outrage, Substitute, Focus Blast , Hidden Power Fire/Outrage
item: Life Orb/Leftovers
nature: Modest/Timid/Naive
evs: 40 Atk / 252 SpA / 216 Spe
When I first looked at this pokemon and realized he was OU I couldn't believe it. Then I realized that his being weak to the soon to be most common type (Fighting) and to a ton of priority moves (bullet punch, vacuum wave, mach punch) I soon realize this guy isn't to amazing. Also his move pool is pretty bad.
As far as a scarf set goes, If you have a ton of entry hazard support then I'd say fine, otherwise your really going to miss that power.
Here are some ideas for this little guy. Someone else mentioned that ice and dragon attacks over lap so much so I decided to check that out but sadly that was very true. I would like to suggest dropping ice moves completely. Salamence doesn't use fly or hidden power flying, Heatran doesn't carry flash cannon, and Gyarados hardly ever uses bounce (but you can actually make a case for it). Why not try Substitute on him over an ice move, that's always an option on slow defensive pokemon isn't it? He does also have access to the screens. Also this poor guy's physical move pool is pretty bad and so you might want to just forget that sexy 130 attack and work off his special side. I mention the Modest nature and the left overs because I'm banking that he will cause a switch and now you wont need to predict anything. It also takes care of his bullet punch/mach punch weakness. His defenses are so nice you might want to even try a left overs with the sub.
Let me know what you guys think. Also on a side note I was thinking about throwing him on a hail team. 100% accurate blizzard coming from a 130 special attack O_O STABed, I don't think that's been done before (correct me if I'm wrong). That's the only way I'd really consider using an ice move from him.
Hail Kyuremu
Blizzard, Stone Edge / substitute, Focus Blast, Hidden Power (electric or grass) / or any dragon move
Ice is resisted by fire water ice and steel. Stone edge covers ice and fire while focus blast hits steels. Hidden power electric or grass cover water. However a super effect HP is only 140 max in which case outrage would do more. Further dragon pulse would be 135 and dragon claw 120.