You can turn or rebuke more undead with a single turning attempt.
Prerequisite: Ability to turn or rebuke undead.
Benefit: You can turn or rebuke more undead than usual. After adding your cleric level and Charisma modifier to your turning damage roll multiply it by 1½.
Source: Complete Divine, page 81. Also published in the later Libris Mortis, page 26, with no appreciable change.