Answer:
It can pierce the best armor and make swords crumble with a rub, yet for all its power It can't harm a wooden club.
Voiceless it cries, Wingless flutters, Toothless bites, Mouthless mutters. What is it?
What month of the year has 28 days?
What points the way without a hand. It floats on water but exists on land?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.
People take me on walks and I run and have fun. What am I?