BSF
Explorer
For some reason, I thought all the blades in that particular barrow were designed to affect the Witch-King. But, I cannot find anything that backs that up. The Witch-King was the leader at Angmar. I am sure there were more of the Nazgul around. Perhaps that blade was just a Nazgul-bane ghost touch blade and since it slew the Witch-King himself it would have pleased the creator more.
It is also worth noting that the blade was not Elven. It was a Dunedain weapon. Dunedain = Men of Westernesse
It is also worth noting that the blade was not Elven. It was a Dunedain weapon. Dunedain = Men of Westernesse