i'm not sure a lot of ppl like this skill, mainly b/c the percentage is so small, but still, 1/10 chance for critical dmg is pretty awesome imo.
right now, i only have it at lvl 1, and i've been able to do a LOT (seriously) of criticals
even at 4%, it feels more like 8% ish. you actually do a lot more criticals than you think you might.
Being human, having my health...