Talk:Mystic Knight/@comment-76.175.81.18-20130313223500/@comment-5847779-20130319204232

You need to block an attack with a shield for it to work. So it will only work with a Fighter, Assassin and Mystic Knight and only when they are blocking.

I doubt it shows on the status screen since it's an "activated" ability. Some Augments don't show up even though their effect is in place. Bastion for instance does not change your stats, but is in effect.