Answer:
I build up castles. I tear down mountains. I make some men blind, but I help others to see. What am I?
I can be found after you remove 6 letters from BSAINXLEATNTEARS
I am an English word that is as long as I am valued. What am I?
Marking mortal privation when firmly in place. An enduring summation inscribed in my face.
Crooked as a rainbow and slick as a plate ten thousand horses can't pull me straight.
What is always coming but never arrives?