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Slaying strike
rogue attack 15

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

Special: If the target is bloodied, slaying strike scores a critical hit on a natural roll of 17 or higher, deals 5[W] + Strength modifier + Dexterity modifier damage on a hit, and half damage on a miss.

Target: one creature

Attack: Dexterity vs. AC

Hit: "3[W] + Dexterity modifier damage."

Miss: "Half damage."[PH:123]

Slaying strike is a daily power available to rogues at 15th level.