Exploit Weakness (Ex)
Source: Adventurer's Guide, p. 144
The lore warden adds one-third her class level on attack rolls to confirm critical hits. At 11th level, whenever she confirms a critical hit, her weapon attacks ignore the first 5 points of damage reduction or hardness the target has until the end of her next turn. At 19th level, the lore warden can automatically confirm a critical hit once per round when she threatens a critical hit.