Upon completing the Rare Ironbark quest in the West Brecilian Forest, go to the Dalish Camp and speak with Varathorn. Informing him that the ironbark was found will please him, and he'll insist on crafting an item for the warden. If the "Neither. I'm sure your clan needs it more than I do." dialogue option is chosen, Varathorn will craft this item for the warden instead of the Wolf-Killer longbow or Varathorn's Armor breastplate.