Sink (Su)

Effect The witch can cause a creature in water to struggle, imposing a –4 penalty on its Swim checks and reducing its swim speed (if any) by 10 feet for 1 minute unless it succeeds at a Fortitude saving throw; on a successful save, the effect’s duration is reduced to 1 round. The duration of this hex can be extended with the cackle hex. This hex does not stack with itself.