Blood Witch Dance.

The witch can use a bonus action to control the movement of one creature cursed by its hex spell that it can see within 30 feet of it. The creature must succeed on a DC 15 Charisma saving throw or use its reaction to move up to 30 feet in a direction of the witch's choice.

Devil's Sight.

Magical darkness doesn't impede the witch's darkvision.

Innate Spellcasting.

The witch's innate spellcasting ability is Charisma (spell save DC 15, +7 to hit with spell attacks). The witch can innately cast the following spells, requiring no material components:

At will: alter self, detect magic, eldritch blast (at 11th level), false life, levitate (self only), mage armor (self only)
3/day each: hellish rebuke, hex, scorching ray (at 3rd level)
1/day each: circle of death, enthrall, suggestion

Actions

Multiattack.

The witch makes two attacks: one with its longsword and one with its shortsword.

Longsword.

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage.

Shortsword.

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage.