There’s a lot going on with BSF that increases her damage. +8% offense from each stack of Ferocity she has. +5% offense stacking each time an opponent is shocked, feared, deathmarked, or marked. In a normal run there’s a good chance she has 15 stacks of ferocity by the time she uses that special. Plus around +50% offense if DR has feared and shocked all opponents before she uses the special. So she might have +170% offense when she uses that special. With all the ferocity on her it’s a guaranteed crit and she has +50% CD from DR lead.