If you pop your super on top of a Shadestep, they'll die due to landfall, same with FoH. If you do it too early where they're at the edge, and they step away, then they won't. Even if you miss they can only step away one more time before a cool down, and your lightning reaches (and your Super lasts) long enough for you to kill them and several others. I've died several times due to Stormtrance, landfall, and even a sniper head shot midstep.