Enervating Shadow Strike

Shadow Hand (Strike)
Level: Swordsage 8
Prerequisite: Three Shadow Hand maneuvers
Initiation Action: 1 standard action
Range: Melee attack
Target: One creature
Saving Throw: Fortitude negates

Your weapon becomes cloaked in an inky, black nimbus. As you strike your opponent, that energy flows into the wound and leaves him pale, weak, and shaking.

As part of this maneuver, you make a single melee attack. If this attack hits, the target must make a successful Fortitude save (DC 18 + your Wis modifier) or gain 1d4 negative levels. You gain 5 temporary hit points for each negative level your enemy gains. Temporary hit points gained in this manner last until the end of the encounter. The effects of any negative levels bestowed by this strike disappear in 24 hours.
This maneuver is a supernatural ability.