As the title says, it does'nt work well, for a keystone, its underpower...
I believe that if it worked as an explosion of damage in the first attack every time it broke part of the armor / mr adaptive, it would work better
For example, the first attack causes 20 (+ 0.2AD) / (0.35AP) and breaks 7 (+3) per armor / mr level for 5 seconds 30s cooldown
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