Answer:
With sharp edged wit and pointed poise. It can settle disputes without making a noise.
It is an arctic double breasted formal wear.
I can be quick and then I'm deadly, I am a rock, shell and bone medley. If I was made into a man, I'd make people dream, I gather in my millions By ocean, sea and stream.
A shimmering field that reaches far. Yet it has no tracks, And is crossed without paths.
A dagger thrust at my own heart, dictates the way I'm swayed. Left I stand, and right I yield, to the twisting of the blade.
I will disappear every time you say my name.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?