- Patch 4.0.1 (2010-10-12): Redesigned. No longer causes damage or reduces attack power. Now reduced physical damage done by enemies.
- Patch 3.3.0 (2009-12-08): The attack power reduction from this ability has been increased by 40%, equaling the maximum possible attack power reduction from the abilities of other classes.
- Patch 3.0.2 (2008-10-14): Renamed from Screech.
- Patch 1.7.0 (2005-09-22): Added.