Lashing Leaves is a 7th level Ranger Encounter power that was introduced in the 377th issue of Dragon (magazine).
Lashing Leaves
Ranger Attack 7
Your dancing blades cut your foe deep, leaving wounds that are exacerbated by further attacks.
Melee weapon
Requirement: You must be wielding two melee weapons.
Target: One creature
Attack: Strength vs. AC. Make the attack twice, once with your main hand and once with your off-hand.
Hit: 1[W] + Strength modifier damage. Until the end of your next turn, the target takes 2 extra damage whenever it is hit. If both attacks hit, the extra damage equals 1 + your Wisdom modifier.