A righteous sentinel who makes a covenant against undead vows to restore any animated corpse he encounters to its natural state of death, and destroy any residual undead energy in the process. Although these righteous sentinels recognize that not all undead are evil, some are quite willing to destroy neutral and good undead along with all the evil ones.
Skills: The righteous sentinel with the covenant against undead adds Knowledge (religion) (Int) to his list of class skills. In addition, whenever a righteous sentinel with a covenant against undead uses Knowledge (religion) to identify or gain information about undead, he receives a bonus on the check equal to 1/2 his righteous sentinel level (minimum +1).
Covenant Powers: A righteous sentinel with the covenant against undead gains the following abilities as he increases in level.
Detect Undead (Su): At 2nd level, a righteous sentinel can detect undead, as the spell. This power otherwise functions like the paladin’s detect evil ability.
Aura of Life (Su): At 8th level, the righteous sentinel gains a +4 morale bonus on saves against attacks that grant negative levels and saves to overcome negative levels. Each ally within 10 feet of her gains a +2 morale bonus on these saves. This ability functions only while the righteous sentinel is conscious, not if she is unconscious or dead. This ability replaces aura of resolve.
Heaven’s Gift (Su): At 14th level, the righteous sentinel gains resist cold 10 and DR 5/— against undead attacks. At 18th level, the righteous sentinel’s resistance to cold increases to 20.
Undead Slayer (Su): At 20th level, the righteous sentinel becomes the bane of all undead. His DR against undead attacks increases to 10/—. Whenever he uses avenging smite and successfully strikes an undead, the undead must make a Will save (DC 10 + 1/2 the righteous sentinel’s level + the righteous sentinel’s Charisma modifier) or be destroyed. If the save is successful, a 30–foot burst of positive energy is released, healing living creatures or damaging undead caught within the burst for a number of hit points equal to his righteous sentinel level + his Charisma modifier. Once an undead has been the subject of a righteous sentinel’s undead slayer attack (whether the save was successful or not), it cannot be affected again for a 24-hour period.