Answer:
I will disappear every time you say my name.
Marking mortal privation when firmly in place. An enduring summation inscribed in my face.
What has to be broken before you can use it?
My first is in riddle but not in little. My second is in think but not in brink. My third is in thyme but not in time. My fourth is in mother but not in brother. My last is in time but no t in climb.
My first is second in line; I send shivers up your spine; not quite shining bright I glitter in the light.
What never gets any wetter no matter how hard it rains?