Concussive Wake

Use your momentum to your advantage and send out a silhouette made of air outward once you stop. When you use this technique, you send out a silhouette of yourself made of air that travels for 30ft in the direction you were moving. If there are any creatures affected, they can make a Wisdom Saving Throw (if they’re an airbender) or an Elemental Affinity Saving Throw (if they aren’t). On a fail, the silhouette deals 1d8 + 1d4 per 5ft you moved continuously in the direction you used this technique, bludgeoning damage. On a success, half as much. At Trained level, the distance traveled damage die becomes 1d6. At Mastered level, the distance traveled damage die becomes 1d8.