Arnu in cat form has a ! weapon in her inventory that does incredible damage. Currently saving up gold to see if it's tradable. (I suspect it won't be, but it shouldn't be in his inventory - I know why it is, which points to cats not having equipment dolls!)
It's possible through an exploit which I explain how to do in an earlier post. The damage is crazy and it's one handed so I use it with a shield on Madora. One hit kills.
