D&D4 Wiki
Vexing sting
rogue attack 9

Requirement: wielding a crossbow, a light blade, or a sling.

Target: one creature

Attack: Dexterity vs. Reflex

Hit: "3[W] + Dexterity modifier damage, and the target takes a −2 penalty to attack rolls (save ends)."[MP:79]

Vexing sting is a daily power available to rogues at 9th level.