Roaring Challenge is an encounter power available to Barbarians at 3rd level.[Dr386:50]
Roaring Challenge
Barbarian Attack 3
Upon striking your foe, you let loose a challenging roar, daring your foes to face you.
Melee weapon
Target: One creature
Attack: Strength vs. AC
Hit: 2[W] + Strength modifier damage, and you make a close blast 3 secondary attack.
Secondary Target: Each enemy in blast
Secondary Attack: Charisma vs. Will
Hit: The target takes a –2 penalty to attack rolls until the end of your next turn.