Board Thread:Versus Battles/@comment-29853277-20181106052156/@comment-31966485-20181110114618

Monarch Laciel wrote: His Pure Eyes only work against weapons though, they wouldn't do anything to tell him her goals or abilities or her personality or what she's done. Nope his Pure Eyes show him the complete history of anyone or anything he sees and if it happens to be a sword (divine construct or not) he can copy it perfectly (Except Ea which would kill Shirou outright with just one glance at it).

to put it in to simple turm's his Pure Eyes of structural grasping are a retrocognition based Analysis/clairvoyance power that lets him cheat his way around opponents with far greater combat experience then him by Showing him their past's.

Direct source comes from chapters 21 through 43 of FFD are the best example of his eyes in use.

For example when he confronts Saber about her wish his Pure Eyes activate out of stress showing him her past well he attempts to pull saber out of herself destructive desires and actually think about things instead of trying to wish herself away.