Your spells with an evil alignment descriptor are more potent than normal.
Prerequisite: Evil alignment.
Benefit: Add +1 to the DC for all saving throws against any of your spells that have an evil alignment descriptor. This bonus does not stack with any other bonus from Spell Focus feats.
Source: Complete Divine, page 84. This feat has been broken into the four separate alignment variants of the original feat, removing the need for the Special section, as only two of the four separated feats (at most) can be taken anyway.