While you are in this stance, you gain a +4 profane bonus to grapple checks and Move Silently checks, do not provoke attacks of opportunity when initiating a grapple, and can choose to deal lethal damage in a grapple without penalty. You also gain Darkvision out to 5 feet, plus 5 feet for every 2 initiator levels (rounded down), but experience Light Blindness as the drow racial trait. This stance is a supernatural ability.