Where to find Osidion in WoW: The War Within

Osidion is an NPC found in Dornogal, the Earthen city located on the Isle of Dorn in World of Warcraft's latest expansion, The War Within. He's an Ensemble vendor, meaning he sells you transmog appearances in exchange for Resonant Crystals; the new Khaz Algar currency rewarded for various activities, including completing world quests and killing rares.

If your character looking their best isn't at the top of your list of things to do when it comes to a new WoW expansion, maybe it's time to examine your priorities.