Using stormtrance is actually harder than it looks. Of course I don't mean that it takes skill, but the controls feel VERY heavy. I was surprised when I used it on my low level warlock. It's hard to get someone when that continuously get cover. Sure, the super doesn't require much aiming, but if the target isn't within range and in the open to you, the Lightning can't get him. (Unless you chain lightning them from a different enemy, but that's not as effective.)