Answer:
What can you put in a barrel to make it lighter?
I fly, yet I have no wings. I cry, yet I have no eyes. Darkness follows me. Lower light I never see.
In the night a mountain, in the morning a meadow.
I follow the orders of only two. I respect the work of only two. I am in constant battles with many, Though one surpassed them all. With forces joined, We created hell, Until our mutual enemy fell. Who am I?
I am the outstretched fingers that seize and hold the wind. Wisdom flows from me in other hands. Upon me are sweet dreams dreamt, my merest touch brings laughter.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?