Here is what you need to do in order to complete the Triumph and get the Ethereal offhand. 1. Complete the entire Terrors of Thalumbra signature questline. 2. Complete the entire Kunark Ascending signature questline. 3. Complete the Frillik Tide (pirate ship) zone. 4. Complete 30 quests in Obulous Frontier. As soon as you complete the Triumph this will pop up. Your first reward is the equivalent of a heroic ranged slot item depending on your class. Then another reward. Now all you have to do is zone into a new zone. When you do you'll have a mail in your inbox. It says go talk to someone about upgrading your weapon. Go talk to the faction merchant in Nye' Cerona. Now will you see the weapons available to your class. Purchase. Congratulations on your ethereal. Here's an example. Note: the mage weapon was fixed after this screenshot was taken. It's an offhand symbol. With infusions and a horrible cyan adorn. The proc crits anywhere from 75mil - 350mil (myth crit with 16,400 potency).