You can protect or target one race or creature type from the effects of your spells.
Prerequisite: 5 ranks in Knowledge (arcana).
Benefit: You can select one race or creature type, chosen at the time of casting, to be completely immune to the effects of your spell. Alternatively, you can elect to target your spell against a chosen race or creature type, causing only that specific race or creature type to be affected by your spell. A discriminating spell uses up a spell slot 2 levels higher than the spell’s actual level.
Special: You cannot name specific individuals, only races and creature types recognized by the game or GM. For instance, you cannot name Zandor the dragon over there by the hill, but you could name dragons—or white dragons. You must use names or types commonly used in the rules or approved by your GM.
Section 15: Copyright Notice – Advanced Feats: The Witch’s Brew