Blade Sweep is a 3rd-level barbarian encounter attack power.[PH2:52]
Blade Sweep
Barbarian Attack 3
Though the fury of your attack is directed at a single foe, no
nearby enemy is spared your wrath.
Melee weapon
Target: One creature
Attack: Strength vs. AC
Hit: 2[W] + Strength modifier damage, and each bloodied enemy adjacent to you takes damage equal to your Constitution modifier.
Rageblood Vigor: Each enemy adjacent to you that is not bloodied also takes damage equal to your Constitution modifier