Storm Call

At 8th level, the thundercaller can use her performance to summon bolts of lightning that deal 3d6 points of electricity damage. The lightning storm lasts for as long as she continues her performance, calling down one bolt of lightning per round on a random enemy within 50 feet of the thundercaller. If in a stormy area (including a whirlwind formed by an air elemental of at least Large size), each bolt deals 3d10 points of electricity damage instead of 3d6.