Neverwinter Nights 2 Feats Database: Feat Details
Empower Turning
Feat ID: 2154
Type of Feat: Divine
Use: Automatic
Prerequisite: Turn Undead
Previous Feat(s) Required: Turn Undead
Installation: Storm of Zehir

You can turn or rebuke more undead than usual. After adding your cleric levels and Charisma modifier to your turning damage roll multiply it by 1.5.