Carrying Scythe. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 (2d6+5) slashing damage. If pernicity keeps moving this turn, she and the target make opposed Strength (athletics) checks. If she succeeds, Pernicity moves the target with her and then releases it at the end of her turn.
Raven's Flight. The witch transforms into a Tiny raven, with a fly speed of 50 ft. She immediately dashes that speed. She can only use this ability once per day.
Torturous Curse. One creature within 30 ft. makes a Wisdom saving throw (DC 15). If it fails, teh witch deals 16 (3d10) necrotic damage to that creature, and then the witch bestows a curse on the creature. After using this power, the witch cannot attempt to curse the same creature until she takes a short or long rest.
The witches have a shared suite of common curses, and each witch has one personal, preferred curse. Choose one available curse, which lasts until the coven is defeated or until it is broken by remove curse.
A creature afflicted by a torturous curse can spend an action to fight the curse. Taking this action allows that creature to ignore the effect of the curse until the end of its next turn, after which the curse takes hold again.