Your attacks deal great damage to your favored enemies.
Prerequisites: Survival 24 ranks, five or more favored enemies.
Benefit: Any weapon the character wields against one of his or her favored enemies is treated as a bane weapon for that creature type (thus, its enhancement bonus is increased by +2 and it deals +2d6 points of damage). This ability doesn’t stack with similar abilities.
Source: Standard Reference Document under Open Game License v1.0a, which updated this feat originally published in the Epic Level Handbook, page 51.