Level: Assassin 4, Hexblade 4
Components: V, S
Casting Time: 1 full round
Range: Personal
Target: You
You strike your foe, then immediately fade from sight.
This spell has no immediate effect upon you. However, the next time you deliver a successful melee attack, you instantly turn invisible (as the invisibility spell). If you do not make a successful melee attack within 1 hour per level of casting the spell, the effect ends.
Source: Complete Mage, page 122.