D&D4 Wiki
Deep cut
rogue attack 5

Requirement: wielding a light blade

Target: one creature

Attack: Dexterity vs. Fortitude

Hit: "2[W] + Dexterity modifier damage, and ongoing damage equal to 5 + your Strength modifier (save ends)."

Miss: "Half damage, and no ongoing damage."[PH:120]

Deep cut is a daily power available to rogues at 5th level.