Lightening Skills do 10-20% more damage.
Attack Speed is increased by x%
*When Electrocute has only one target to strike a second Large Bolt of lightening is
called from the sky doning 500% weapon damage to the single target.
"The Mages of old knew the worth of iron in conducting the elements channeling their
skills in new and powerful ways."
link to Original Post http://us.battle.net/d3/en/forum/topic/13273357259