A righteous sentinel who makes a covenant against dragons swear to protect others against the predation of dragonkind. Some include dragonblooded creatures (such as half-dragons or even sorcerers with the draconic bloodline) in their covenant and team up with inquisitors to root out those whose ancestry carries the taint of dragon magic. Many righteous sentinels with this covenant are thrill-seekers for the cause of good, channeling their divine power in ways that allow them to take on their powerful foes head on.
Skills: The righteous sentinel with the covenant against dragons adds Knowledge (arcana) (Int) to his list of class skills. In addition, whenever a righteous sentinel with a covenant against dragons uses Knowledge (arcana) to identify or gain information about dragons, 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 dragons gains the following abilities as he increases in level.
Breath Evasion (Su): At 2nd level, a righteous sentinel gains evasion, but only against the breath weapons of creatures with the dragon type.
Dragon Resistance (Su): At 8th level, the righteous sentinel gains energy resistance 10 against one energy type of his choice (acid, cold, electricity, fire, or sonic) and a +2 natural armor bonus for a number of rounds per day equal to his righteous sentinel level + the righteous sentinel’s Charisma modifier. At 13th level, the righteous sentinel’s energy resistance increases to 20 and natural armor bonus increases to +3. At 18th level, the righteous sentinel’s energy resistance increases to 30 and natural armor bonus increases to +4. These rounds need not be consecutive. A righteous sentinel may select a different type of energy resistance each time he activates this ability. Activating and deactivating this ability is a free action.
Spell Resistance (Su): At 14th level, the righteous sentinel gains spell resistance against evil dragons equal to 12 + his righteous sentinel level for a number of rounds equal to 1/2 the righteous sentinel’s level + the righteous sentinel’s Charisma modifier. The righteous sentinel can use this ability a number of times per day equal to 3 + the righteous sentinel’s Charisma modifier.
Dragon Slayer (Su): At 20th level, the righteous sentinel becomes a true slayer of dragons. He gains DR 10/evil. Whenever he uses avenging smite and successfully strikes a dragon, the dragon is also subject to a single-target holy word, using his righteous sentinel level as the caster level. After the banishment effect and the damage from the attack are resolved, the avenging smite immediately ends. In addition, the whenever the righteous sentinel makes a successful dragon slayer attack, he is healed for a number of hit points equal to his righteous sentinel level + his Charisma modifier.