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Low slash
rogue attack 3

Requirement: wielding a light blade

Target: one creature

Attack: Dexterity vs. Reflex

Hit: "1[W] + Dexterity modifier damage, you slide the target 1 square, and the target is slowed until the end of your next turn. If you’re flanking the target, the attack deals extra damage equal to your Strength modifier or Charisma modifier."[MP:76]

Low slash is an encounter power available to rogues at 3rd level.