A righteous sentinel who makes a covenant against giants is ever watchful for marauding bands of these large creatures. Some righteous sentinels swear to protect communities from the predation of giantkind, free those enslaved by them, or avenge those slain at their hands. Some include giantblooded creatures (such as half-giants) in their covenant and team up with rangers to hunt down and destroy those whose ancestry carries the taint of giant blood.
Skills: The righteous sentinel with the covenant against giants adds Knowledge (nature) (Int) to his list of class skills. In addition, whenever a righteous sentinel with a covenant against giants uses Knowledge (nature) to identify or gain information about giants, 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 giants gains the following abilities as he increases in level.
Defensive Training (Ex): At 2nd level, the righteous sentinel becomes well trained in the tactics required to battle giants. The righteous sentinel gains +1 dodge bonus to his AC against any monster of the giant subtype, and an additional +1 every four levels thereafter, to a maximum of +5 at 18th level.
Powerful Build (Ex): At 8th level, the righteous sentinel becomes particularly large and muscular. Whenever the righteous sentinel is subject to a size modifier, he is treated as one size larger if doing so is advantageous to him. He is also considered to be one size larger when determining whether a creature's special attacks based on size (such as grab or swallow whole) can affect him. In addition, the righteous sentinel can wield weapons one size category larger than normal without penalty, and gains a +2 bonus to his CMB when performing combat maneuvers against giant types with such a weapon.
Regenerative Blood (Su): At 14th level, as a swift action, the righteous sentinel gains fast healing 5 for a number of rounds per day equal to 1/2 the righteous sentinel’s level + the righteous sentinel’s Charisma modifier. These rounds need not be consecutive.
Thunderous Strike (Su): At 20th level, a righteous sentinel becomes imbued with divine power. His DR increases to 10/evil. Whenever he uses avenging smite and successfully strikes a giant, a clap of thunder resounds. The giant must succeed at a Fortitude save (DC 10 + 1/2 the righteous sentinel’s level + the righteous sentinel’s Charisma modifier); failure means the giant is killed, as if it were affected by slay living. If the save is successful, the giant takes normal damage from the righteous sentinel’s avenging smite, and is stunned for 1 round. Once a giant has been the subject of a righteous sentinel’s thunderous strike (whether the save was successful or not), it cannot be affected again for a 24-hour period.