Lightning Storm is a Mythic Age god power in Age of Mythology, available to worshippers of Hera. It deals significant amounts of damage to enemy units in the target area. The more units there are in the area, the more damage is done. It does not harm friendly units and deals almost no damage to buildings.
Lightning Storm is the polar opposite of the Earthquake god power, which devastates buildings but does little damage to units. Hence it should be used when the opposite situation pertains. It is superb for destroying the force defending an enemy town and also in the open field, where it can turn the tide of a battle to the player's side. It also useful defensively when caught off-guard, as the attacking force will suffer huge losses and will be easier to defend against.