D&D4 Wiki
Stolen vitality
rogue attack 19

Requirement: wielding a light blade.

Target: one creature

Attack: Dexterity vs. AC

Hit: "4[W] + Dexterity modifier damage, and the target is slowed (save ends). You gain temporary hit points equal to 10 + your Charisma modifier."

Miss: "Half damage, the target is slowed until the end of your next turn, and no temporary hit points."[MP:83]

Stolen vitality is a daily power available to rogues at 19th level.