so the def reduction is 100 / (def + 100), which at 999 is ~91% reduced.
wow, that would be good for the first loops but after that I would get SHUT DOWN. Also more wind slicers means less spell vortexs but both are really important so they would contradict each other and im too lazy to find out what is the optimal amount of both (Id think it would be 3-3 or 4 vortexes and 2 slicers)