Amulet of the Mist

What is it used for? I have heard that it is used to get into Elite Missions. I and have heard that you can trade it for Green or special Items. Can someone plz give me a straight answer.

I believe for each character you beat the Factions Campaign with, you get an amulet which you can exchange for a green item out of a list in a special shopping area after the last mission.

U can have 1 amulet per char
After last battle there is an area with special green weapons.
U can have 1 of them 1 time only.
There are also new Hod weapons max dmg sword bow ecc..
And Factions armor

Basically an "elite" market area.

You trade the amulet for a green.

You can buy +5e weapons off a crafter.

And You can buy the last style 15k armor here. (You can buy Kurzich or Luxon 15k in their respective 15k armor selling city).