Hehe, only pokemon with 6X weakness to an element. *Parasect with Dry Skin ability takes 5x damage by comparision*
I personally would prefer Ruin/Steel myself. Steel cuts down the weakness of dragon by a bit and resists a ton of other elements, and loses two of its weakpoints, ground and fighting. Also neutralizes the weakness to psychic and dark and steel and ruin type neutralizes fire. This in addition to reducing some other damages such as ice and water and grass in a manner similar to dragon types, giving it several quad resistances.
