Infernal Sorcerer Heritage
(Player's Handbook II, page 91, DnD 3.5)
[Heritage]
Your innate magic derives from infernal ancestors. Your blood is thick with their power, allowing you to exhibit a variety of abilities.
Prerequisite
Sorcerer level 1
Benefit
You gain a bonus on saves againstfireand poison equal to the number of infernal sorcerer heritage feats you possess. When you use a conjuration (summoning) spell to summon an evil outsider, you gain a +2 bonus to your caster level.