Ride the Current

You can initiate this counter in response to a melee
or ranged attack being made against you. If your
weapon is sheathed, you may draw it and make a
melee attack against your attacker. If it hits, it deals
weapon damage as normal. Regardless of whether
or not you attacked, you can move up to 10 feet
without provoking attacks of opportunity.
You cannot make this counterattack if the target
is not within your melee reach or otherwise
targetable with a melee attack.