Dissonant Strain
Bard Attack 3
You sing in two pitches at once, creating a song that harms your foe while helping your ally.
Ranged 5
Target: One creature
Attack: Charisma vs. Will
Hit: 2d6 + Charisma modifier psychic damage, and the target takes a -2 penalty to attack rolls until the end of your next turn. In addition, an ally within 5 squares of you can make a saving throw.
Dissonant Strain is an encounter power available to bards at 3rd level.[PH2:70]