You know how to use a specific weapon skillfully, even when it has undergone modification.
Prerequisite: Proficiency with the selected weapon.
Benefit: Select one type of weapon, such as longsword. You are always considered to be proficient with modified weapons of that type.
Normal: A modified weapon is treated as one category more difficult to wield.
Special: A warpriest with the focus weapon class feature can gain this feat with his deity’s favored weapon in place of his bonus Weapon Focus feat. A magus with the kensai archetype can gain this feat with his chosen weapon in place of his bonus Weapon Focus feat.
Pathfinder Player Companion: Adventurer’s Armory 2 © 2017, Paizo Inc.; Authors: Jenny Jarzabski, Mikko Kallio, Isabelle Lee, Luis Loza, Joe Pasini, David N. Ross, and Linda Zayas-Palmer.