Your next Lightning Bolt will be instant cast and deal 150% increased damage, or your next Chain Lightning will be instant cast and cause an Elemental Overload to trigger on every target hit. If «Shaman Elemental 12.0 Class Set 4pc»:
Additionally, increases Lightning Bolt and Chain Lightning damage by X.1%.
Charge yourself with lightning, causing your next 2 Lightning Bolts to be instant cast and deal 150% more damage, or cause your next 2 Chain Lightings to be instant cast and trigger an Elemental Overload on every target.
Elemental
Stormkeeper