Generic, Text: Misfortune (Su)

Effect: The witch can cause a creature within 30 feet to suffer grave misfortune for 1 round. Anytime the creature makes an ability check, attack roll, saving throw, or skill check, it must roll twice and take the worse result. A Will save negates this hex. At 8th level and 16th level, the duration of this hex is extended by 1 round. This hex affects all rolls the target must make while it lasts. Whether or not the save is successful, a creature cannot be the target of this hex again for 1 day.
 
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Advanced Player’s Guide. Copyright 2010, Paizo Publishing, LLC; Author: Jason Bulmahn.