Answer:
What is weightless but it needs two person to hold it?
There are millions of me. I am very small but when moving fast I am deadly.
I can move even when you are still. I can be one or many.
My first is in wield, sever bones and marrow. My second is in blade, forged in cold steel. My third is in arbalest, and also in arrows. My fourth is in power, plunged through a shield. My fifth is in honor, and also in vows My last will put an end to it all.
Bury deep, Pile on stones, My mind will always Dig up them bones
Long and slinky like a trout, never sings till it's guts come out.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?