Answer:
I weaken all men for hours each day. I show you strange visions while you are away. I take you by night, by day take you back. None suffer to have me, but do from my lack.
A warrior amongst the flowers, he bears a thrusting sword. He uses it whenever he must, to defend his golden hoard.
They try to beat me, they try in vain. And when I win, I end the pain.
Although my cow is dead, I still beat her. What a racket she makes!
Break it and it is better, immediately set and harder to break again.
What never gets any wetter no matter how hard it rains?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?