Yalaharian Outfits Quest/Spoiler

Note: this outfit quest is special, because you will only be able to obtain one of two available addons, not both.
=== Outfit ===
Complete the In Service of Yalahar Quest.
=== Sage Addon ===
==== Required Equipment ====
*Vampiric Crest (obtained through the Blood Brothers Quest).
==== Method ====
After completing the Blood Brothers Quest, bring the Vampiric Crest to Palimuth in Yalahar, if you choose Palimuth's side in mission 9 of the Yalahar main quest you will get this addon.
=== Villain Addon ===
==== Required Equipment ====
*Vampiric Crest (obtained through the Blood Brothers Quest).
==== Method ====
After completing the Blood Brothers Quest, bring the Vampiric Crest to Palimuth in Yalahar, if you choose Azerus' side in mission 9 of the Yalahar main quest you will get this addon.