Tactical Item #9: Replace Creeping Terror w/ Chain Lightning. In addition, when you activate Lightning Strike or Chain Lightning, there is a 30% chance the ability will produce a second arc of lightning that strikes the same targets for 30% damage. Lightning Strike also has a 100% chance to cause a Lightning Storm, immediately finishing the cooldown on Chain Lightning and reducing the activation time of your next Chain Lightning by 100%. This effect cannot occur more than once every 10 seconds.
Old school Mad-ling hybrid