You sing in two pitches at once, creating a song that harms your foe while helping your ally.

Encounter   ✦     Arcane, Implement, Psychic
Standard Action      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.

Published in Player's Handbook 2, page(s) 70.