Kingdoms in Death
Unquenchable Flame of Life
You are hardened to the attacks of the undead.
Benefit: You gain a +2 bonus on all saves against the extraordinary or supernatural abilities of undead creatures.
Special: If you have selected undead as your favored enemy, your bonus on saving throws is instead equal to your favored enemy bonus against undead.
Rulebook: Libris Mortis (p. 31)
Edition: Supplementals (3.5)