Answer:
I am the ultimate killing machine used not once but TWICE I can be made by humans.
Wind and cord combine, buzzing in the box. In all this we find, though to some the use is lost. What am I?
I am the kind of soda you must not drink. What am I?
What has a neck but no head?
u always follow me but I am rarely seen
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.