Hidden Enemies
Kill the Searing Blade leaders Jergosh the Invoker and Bazzalan, then report to Thrall.
Kill the Searing Blade leaders Jergosh the Invoker and Bazzalan, then report to Thrall.

Start the chain early: the first part needs an insignia from Skull Rock, just outside Orgrimmar.
The weapon reward comes at the end of the chain, two short talk quests after the kills.
Horde: Thrall in Orgrimmar (32.0, 37.8).
Horde: Thrall in Orgrimmar (31.9, 37.9).
experience only, 2,350 XP.
Hidden Enemies is a level 16 quest; you can pick it up from level 9. It takes you into Ragefire Chasm.
All Ragefire Chasm quests on one map ·Ragefire Chasm dungeon guide
Sources: Quest data from ForeverDB.net · ForeverDB: Ragefire Chasm dungeon · ForeverDB: Orgrimmar quests · ForeverDB: Thunder Bluff quests · ForeverDB: Undercity quests · ForeverDB: Hidden Enemies · ForeverDB: Returning the Lost Satchel