Answer:
You buy me to eat, but never eat me. What am I?
I cannot be other than what I am, until the man who made me dies. Power and glory will fall to me, only when he last closes his eyes.
What gets sharper the more you use it?
I have three eyes and only one leg. Obey me or you will be sorry.
I am a lunch money thief
Give it food and it will live, give it water and it will die.