Abyss-Bound Soul
(Elder Evils, page 11, DnD 3.5)
[Vile]
You have pledged your immortal soul to a particular demon lord in return for a gift that aids your evil works in life.
Prerequisite
Benefit
Your evil brand incorporates the personal symbol of your demon lord patron, who watches over you from the Abyss. You gain a +2 bonus on saving throws made against spells that have the good descriptor. Additionally, a tiny portion of your patron's power infuses your body, granting you an additional benefit. The exact benefit gained depends on who your patron is, as given below.