Answer:
I have thirteen hearts but no body or soul.
the only amusing part of the body
What has roots that nobody sees and is taller than trees. Up up up it goes and yet never grows?
What can be as big as an elephant but weighs nothing?
I make everyone blind. You can't see me but I will always come back for you. What am I?
The answer I give is yes, but what I mean is no. What was the question?