SRD:Phylactery of Undead Turning

Phylactery of Undead Turning: This item is a boon to any character able to turn undead, allowing him to do so as if his class level were four levels higher than it actually is.

Moderate necromancy [good]; CL 10th; Craft Wondrous Item, 10th-level cleric; Price 11,000 gp.