I run this set
Zuruzukin @Leftovers
Careful
Shed Skin
SpDef/eveny split Att,Def,Hp EVs
-Bulk Up
-Ice Punch
-Drain Punch
-Dragon Tail
When first sent out, this thing tanks special attacks hard. Like Latios Draco Meteor does 75 % or some business. Bulk Up on the first turn, making it a dual wall and giving it some power. Drain Punch is the primary attack, Ice Punch takes care of those nasty dragons (Garchomp, Mence, etc.) with some surprise KOs when they switch in on Drain Punch, and Dragon Tail phazes all those nasty setup artists, especially walls like Vaporeon and Suicune.
Paired with a Ghost type, this guy tears it up. The ONLY problem he faces is Fighting types, but as I said a Ghost types solve this, usually scaring them away or crippling them with Will O Wisp. Great Pokemon though very underrated