Witches learn a number of magic tricks, called hexes, that grant them powers or weaken foes. At 1st level, a witch gains one hex of her choice. She gains an additional hex at 2nd level and for every 2 levels attained after 2nd level, as noted on Table: Witch. A witch cannot select an individual hex more than once.
Unless otherwise noted, using a hex is a standard action that does not provoke an attack of opportunity. The save to resist a hex is equal to 10 + 1/2 the witch’s level + the witch’s Intelligence modifier.
Starting at 18th level, and every two levels thereafter, a witch can choose a grand hex whenever she could select a new hex.