Gives your [Lightning Bolt] and [Chain Lightning] spells a 4n% chance to cast a second, similar spell on the same target at no additional cost that causes half damage and no threat.
Lightning Overload is a passive talent that gives your [Lightning Bolt] and [Chain Lightning] spells {4/8/12/16/20}% chance to cast a second, similar spell on the same target with no cost. It causes half damage and no threat.