Answer:
This is in a realm of true and in a realm false, but you experience me as you turn and toss.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard.
What tastes better than it smells?
Though blind as well, can lead the blind well.
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. I have greatest power when given away, yet lust for me keeps me locked away.
Keep doing me to avoid lens dryness