Your innate ability to shroud others in darkness is further empowered.
Benefit: You gain a +2 bonus to your effective caster level when using your darkness spell-like ability. In addition, whenever you cast a spell with the [evil] descriptor that targets another creature, you can spend a swift action to apply the effects of your darkness spell-like ability to the spell cast, with the darkness effect centered on the spell’s target. Using the darkness spell-like ability in this way expends all three uses of it for the day, and it cannot be used if fewer than three uses of it remain for that day.
Section 15: Copyright Notice – PPC:BoF
Pathfinder Player Companion: Blood of Fiends © 2012, Paizo Publishing, LLC; Authors: Hal Maclean and Colin McComb.