Answer:
Four leaves I have.
What goes all around the world but never leaves its corner?
What has keys but no locks a space but no room and you can enter but can't go in?
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. What am I?
I make everyone blind. You can't see me but I will always come back for you. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.