Answer:
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
It's what light turns into in the night
The eight of us go forth not back to protect our king from a foes attack.
A young man wants to have it, but when he has it he no longer wants it. Blade in hand he attacks it And does his best to remove it. Yet he knows that it is all in vain.
What is not a ball but yet a sphere, and holds all lands and people year after year?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?