WoW: Farm Valarjar Soul Fragments for The Lost Army

Having the quest Helarjar Landing: Vrek from Stormheim active allows you to farm the Valarjar Soul Fragments. 

The mob Vaetfang can drop up to 2 Valerjar Soul Fragments if you have the quest Halarjer Landing Vrek active. To stop the quest from completing do NOT kill Helya's Helarjar. The quest will finish if you kill 10 total. The coordinates are 73.96 86.73, they respawn after 60 seconds.