by Kamakaze
I played it that I can use it as many times as I want.There is no limit to it's use, all other cards of this type either say once per round, per attack or exhaust themselves.
This does not, so I can use this card as many times as I wish, and can pay the fatigue.
Of course I need to use this card before the overlord spends surges as once he has done that, the "after defense dice are rolled" window has passed.
I believe the item version of this from 1e, basically let you lose fatigue instead of health (which this item reproduces with a fatigue cost) and this skill is very bad against enemies with Pierce.