Spell Focus (Good)

(Book of Exalted Deeds, page 46, DnD 3.5)

[General]

Your spells with the good descriptor are more potent than normal due to your relationship with the powers of good.

Prerequisite

Any good alignment

Benefit

Add +2 to the Difficulty Class for all saving throws against your spells with the good descriptor.

Special

The +2 increase also applies to the Difficulty Class for a possessing fiend to Hide from your good spells such as detect evil or magic circle against evil (as detailed in the Book of Vile Darkness).