Prefect World: Archer Level 39 skill
Stunning Arrow / Outcold Blast C One of the better skills bestowed upon archers in Prefect World. It deals moderate damage but has a chance to stun the target for 3 seconds. At first stunning may be average, but as you level it and raise the % chance to stun, it'll reach a point where it becomes a new standard skill for grinding combos. Very useful in PvP as well because of the stun.
Tips: In addition to frost arrow and Knockback Arrow, now stunning adds stun to the slow/knockback mix. You can use it to start off a combo, after charged, or after repulsing. If you can time it well, you can use it during a monster's magic cast so that it cancels out the move. Either way, 1-2 more hits can be used thanks to stunning. In PvP, stunning can be used before fury or Winged Shell, so that the 3 second stun can cover for you. Otherwise, time Stunning Arrows so that they cancel out big skills that have potential to bring the pain.
Wingspan C another close ranges physical attack similar to wing attack, except that it deals AoE damage and knockback. Not good for AoE leveling, but good for emergency situations where multiple monsters are swarming you. By this point however, as an archer you should know to avoid close combat, so it is not recommended to level Perfect World Gold as you won't be using this much.