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

Encounter   ✦     Arcane, Implement, Thunder
Standard Action      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.

Published in Arcane Power, page(s) 7.