|The subject of this article was removed from World of Warcraft in patch 4.0.1.
Blood, Tier 7
Hysteria is a Death knight ability that allows the death knight to induce a friendly unit into a killing frenzy for 30 sec.
- Patch 4.0.1 (2010-10-12): Removed.
- Patch 3.1.0 (2009-04-14): This ability now causes the target to lose health rather than take damage.