Images:

gw2-stardustgw2-stardust-2gw2-stardust-3

Set:

Slot Item Name Trading Post Preview Code
Short bow http://db.dulfy.net/item/44979 GW2 TP [&AgGzrwAA]

Where to Obtain:

Champion loot boxes: Heirloom Seed Pouch, Gilded Strongbox

Particle Effects:

The crystal parts of the bow glows.