Unsure what you are asking, but that item is a cosmetic tribute to a player that passed away, it's an elusive drop and it does go away if you die, maybe the wings fly up to heaven, who knows. You can reapply it if you find it again. Although never seen it on traprat before, cause have not played one yet.
Widzor wrote:How does it work a Elite Zone? and how many zones are there?
Mobs in elite zones can drop Oil of Conjuration, which is used to upgrade a caster's weapon. Not sure how many but pretty much all the red portals in Arreat Plateau, Frigid Highlands and Frozen Tundra, as well as Icy Cellar, are elite zones.