This is part of the Bloodfang Armor set, the raid Tier 2 armor set for Rogues.
Prior to the release of patch 3.2.2, this item dropped from the level 60 version of Onyxia. It has since been moved to Nefarian in Blackwing Lair, along with the rest of the tier 2 helms.
- Patch 3.2.2 (2009-09-22): Now drops from Nefarian in Blackwing Lair.
- Patch 1.9.0 (2006-01-03): Updated with new art.
- Patch 1.4.0 (2005-05-05): Changed the tooltip of the Bloodfang Hood's effect to properly indicate the duration of the stun.