Answer:
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
I have four fingers and a thumb, but I'm not living. What am I?
I am the kind of ant that's good at math.
My rings are not worth much, but they do tell my age. What am I?
Fatherless and Motherless, born without sin. Roared when it entered the world, And never spoke again.
Keep doing me to avoid lens dryness