I know what ehrgeiz is.
What would make me change my mind in that ?

Did you actualy check ALL the other guide ? Is that why you posted this one ? Cause in almost all the other one in gamefaqs its actualy puted under Sword Techniques or Special Move. While in this one it's actualy in a nowhere just telling how to do it.

Edit:

I guess you just edited your whole post. Anyway read the rule then come back posting.