You can inflict those you touch with a major spellblight.
Prerequisites: Wychfiend, major hex class feature, class level 12th.
Benefit: Once per day, you can bestow a major spellblight upon a creature as a swift action. Select one major spellblight, and once chosen it cannot be changed. By making a successful ranged touch attack, you bestow this major spellblight on your chosen target. This hex can be chosen only once. You must be at least 12th level to select this major hex.