Does the pathfinder feat Moonlight Stalker
While you have concealment from an opponent, you gain a +2 bonus on attack and damage rolls against that opponent.
interact with the pathfinder feat Wind Stance?
If you move more than 5 feet this turn, you gain 20% concealment for 1 round against ranged attacks.
Its unclear whether the partial concealment granted by MS against ranged attacks counts for the purposes of wind stance.