This is the most bipolar skill I’ve every come across, in a battle I get like maybe two if lucky of actual contact. When it hits a enemy, the health removal is incredibly. I’m in hell taking quarter health off at a time. But it seems I’m more a less just casting it more and more with zero result.as an example if I cast it 15 times I’ll be lucky to hit 3 times if that regardless of the distance. I can be right next to the enemy and nothing, I don’t understand what I’m doing wrong with this skill. I have it at lvl 29 w/gear on and 20 without. I’m a lvl 80 sorceress
In hell you can only use static for 25% life
Extra points just makes radius of hit better, does not give any extra damage.
Like you said it takes a % of remaining health and therefore has deminishing returns.
Normal you can take them down to 1 HP.
Nightmare it is like 25% health remaining.
Hell will only take them down to 50%.
Lightning immunity and lightning enchant (lightning resist) will also decrease effectiveness.
Hope this helps.
Holy crap that explains so much… Man I thought I something with wrong with the my copy of the game. Thanks for clearing that up for me. That’s a big relief actually. Hell yeah Coopa thanks a ton 
. God bless and have a great day/night