Song of Storms
Bard Attack 13
With a sonorous hum, you summon lightning, blasting your foes with it, and imbuing your allies' attacks with its power.
Close blast 5
Target: Each enemy in blast
Attack: Charisma vs. Reflex
Hit: 2d6 + Charisma modifier lightning damage. Each ally in the blast deals 1d6 extra lightning damage on a hit until the end of your next turn.
Song of Storms is an encounter power available to bards at 13th level.[PH2:73]