Board Thread:Off Topic/@comment-24534644-20170213012304/@comment-24534644-20170329220143

From one matter, electric currents will eventually dissipate. Not to mention the conductivity of the object in question is also important for how long the current will last. Regardless, the person would need to recharge his shurikens at some point.

And for a second matter, you'll notice that Nora has only once used her own Dust to charge her Semblance, when fighting the Geist. All other circumstances she's done it, we've seen her A) getting charged by a cattle prod to the torso, B) using her hammer as a lightning rod and being charged the natural way, and C) getting charged by a Dust bullet from Ruby. Nora by no means relies on her Semblance for combat; rather, she uses it as a secret weapon, a trump card, or when she really needs that extra boost of strength. Otherwise, she just fights normally. So comparing her to a guy who's entire fighting style is dependent on both his Semblance and a supply of Dust really doesn't work.