Blood War Sorcerer (3.5e Feat)
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 Blood War Sorcerer
As a battle magician in the blood War, you’ve learned killing arts that would amaze common spellcasters.
Prerequisite: Caster level 5, Knowledge (Arcana) 1, must have fought in the Blood War
Benefit: Each time one of your spells successfully penetrates a creature's Spell Resistance, they take a cumulative -1 penalty to Spell Resistance (minimum 0). This penalty is reduced by 5 per day, and can be otherwise healed as ability damage. In addition, you may cast any spell that requires you to be of a fiendish race.