Aura of Undead Disruption (General)
The character is surrounded by positive energy, weakening undead.
Liber Mysterium
The Netbook of Witches and Warlocks
By Timothy S. Brannan and The Netbook of Witches and Warlocks Team
Full netbook can be found on the following website
Prerequisite: Ability to cast 2nd level Divine Spells
Benefit: When in a 5′ radius with undead or creatures harmed by positive energy, the creatures receive a -2 to it’s AC, attack roll, and skill checks.