Answer:
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
What is lighter than what it is made of?
This thing runs but cannot walk, sometimes sings but never talks. Lacks arms, has handsΝΎ lacks a head but has a face.
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. The wind is my lover, one-legged am I. Name me and see me at home in the sky.
Kills the bad ones and the sad ones. Tightens to fit, so one size fits.
What sphinxes employ and players enjoy.