|The subject of this article was removed from World of Warcraft after the Mists of Pandaria cleared.
|Location||Unholy Tree, Tier 1|
|Affects||Spells and Diseases|
|Rank||Increase Diseases Damage|
- Patch 4.0.6 (8-Feb-2011): The spell hit bonus previously given by Virulence (Unholy) has been rolled into the Runic Focus passive effect that all death knights possess.Virulence has been redesigned. It now grants 10/20/30% additional disease damage.
- / Patch 4.0.1 (12-Oct-2010): No longer reduces the chance that spells and diseases the death knight cause can be cured.
- Patch 3.1.0 (14-Apr-2009): Moved from tier 2 to tier 1.