Answer:
I am a box that holds keys without locks, yet they can unlock your soul.
Where humans breath liquid?
The sharp slim blade, that cuts the wind. What is it?
What is that which, though black itself, enlightens the world without burning?
An iron horse with a flaxen tail. The faster the horse runs, the shorter his tail becomes.
What is full of holes but still holds water
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?