User blog comment:Dnxz0015/Black Arrows/@comment-25675351-20141117091101

I tend to agree at the moment that bard will kill smaug with a normal bow, however smaugs scale is already missing. His armor is essentially already gone in that specific bare patch. Much of the arguement is what it would take to penetrate a scale, because as mentioend above, if any normal steel blade can do it, than why not create more? Why were black arrows so rare, and so few were made?

Galvorn is another theory, or perhaps galvorn, merged with mithril. The point being is the black arrow is not a regular arrow. So what exactly is it?