black breath lol 😛
all blades perish that pierce the witchking.
frodo stabs wiki on weathertop--his sword survives, and his arm doesnt go completely cold and numb---well it does but thats because of the morgul blade.
btw the mystery of 'are the nazgul invisible, or just spirits'
they are invisible--they wore their rings too much until they simply faded away. and became invisible--a shadow under saurons shadow.
The fading away s what is happening to bilbo when he says he 'feels thin;