This armor may be worn only by: Furies.
Note that the Venerable Tunic of the Stormbringer only drops from a mob. It can not be purchased or crafted. You can create it from a Irradiating Hauberk which drops from Warmaster Deynka Packlasher in Tower of Tactics
After today's patch (11.10.2011), some of these items can also drop from mobs in Drunder:
•Grolla will now drop shoulders •Warmaster Korok Hai will now drop legs •Dvuul Ripclaw will now drop boots •Hamslammer has a chance to drop forearms or gloves •Rageborne MacKulla has a chance to drop forearms or gloves