Has there been testing that determined how the accumulative magic resistance patch works exactly? If so, a link would be appreciated, I haven't been able to locate anything yet searching.
Otherwise, from my own casual observation I have noticed it isn't elemental damage specific (i.e. 5x ES+Tornado 2 on Kirin almost immediately followed by a Nether Blast will have the Nether Blast do less than usual.) And that, on Kirin at least, it wears off very rapidly.
If my observations were incorrect or inaccurate or anybody can provide some better insight into it I'd appreciate it. Thanks!