Attendant of Iron (くろがねの傅, Kurogane no Itsuki?) is a Skill where with proximity of presence alone, the Servant is capable of reinforcing his Master's physical attributes.[1]
The original Musashibou Benkei possessed six black birthmarks, said to have appeared because his mother ingested iron during her pregnancy. "Itsuki" ("attendant"), in the Shinto tradition, was a title ascribed to servants of a god; Yoshitsune, a beautiful child, is regarded to have possessed the aspect of a godling, and Benkei was her faithful servant. This Skill is the reproduction of this episode.[1]