The game's collection data lists Obsidian Arborweave Helm as sold by a vendor NPC in Townlong Steppes. The vendor stands at 37.9, 64.6 on the Townlong Steppes map.
Vendor NPC, zone and position come from the client's collection source tables (CollectableSourceInfo and CollectableSourceVendorSparse); coordinates are the in-game map readout.
Build history
First seen in build 5.5.4.69585 (Mists of Pandaria).
Read from the World of Warcraft client build files.
How Obsidian Arborweave Helm Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Obsidian Arborweave Helm suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Transmog Sets
Obsidian Arborweave Helm is part of the transmog set Obsidian Arborweave Vestments (Druid only). The other 16 pieces:
2 other items in the current build are also called Obsidian Arborweave Helm. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 71492 (71487 to 71497) were usually added in the same batch as Obsidian Arborweave Helm: the same quest line, zone, vendor or reward set.