User blog comment:Agni Blackheart/Agni's Stage: Wind Princess Rozalia/@comment-17420927-20161018011127

I think you're a little confused. In her SP, you say the one for the elemental mitigation is useless if you have elemental weakness null. These are actually not the same thing. The former means if the opponent's base type matches one of the mitigated types, it gates straight up 10% mitigation. Not 10% less weakness damage, but full on 10% less TOTAL damage, like standard mitigation. And it stacks. It's a solid compromise between constant all-around 10% ones like Azurai, Gazia, and Tridon, and ones with a condition, like Ark and Hisui. It's 15% with the SP but only for 4/6 elements. The buff you thought of, negate elemental damage, only means you don't take extra damage if the foe strikes you with an element you are weak to (such as a water enemy hitting a fire unit and thus dealing more damage) but otherwise has no mitigation.