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Focused Sound
Bard Attack 1

With a resounding shout, you rattle your enemy and expose a vulnerable spot in its defenses.

Ranged 10

Target: One creature

Attack: Charisma vs. Reflex

Hit: 1d10 + Charisma modifier thunder damage. Until the end of your next turn, any attack against the target can score a critical hit on a roll of 18-20.

Focused Sound is an encounter power available to bards at 1st level.[AP:7]