Ghost Cut Technique (3.5e Feat)
From D&D Wiki
 Ghost Cut Technique [General]
Study of the ephemeral essence of incorporeal undead has taught you combat techniques that transcend the limitations of the flesh.
Prerequisite: Whispers of the Otherworld
Benefit: Each day, you can use the spell wraithstrike as swift action spell-like ability a number of time equal to half your character level. You also gain a +2 to initiative checks, a +4 to Move Silently checks, and Lifesight as a Special Quality.