Vlonwelve Auvryndar - Matron Mother

Fey Ancestry. The drow has advantage on saving throws against being charmed, and magic can’t put the drow to sleep.

Innate Spellcasting. The drow’s innate spellcasting ability is Charisma (spell save DC 19). She can innately cast the following spells, requiring no material components:

At will: dancing lights

1/day each: darkness, faerie fire, levitate (self only)

Spellcasting. The drow is a 20th-level spellcaster. Her spellcasting ability is Wisdom (save DC 19, +11 to hit with spell attacks). The drow has the following cleric spells prepared:

Cantrips (at will): Chill Touch, Dancing Lights, Guidance, Poison Spray,  Resistance, Spare the Dying, Thaumaturgy, Toll the Dead

1st level (4 slots): Animal Friendship, Cure Wounds,Detect Magic,  Detect Poison and Disease, Faerie Fire, Healing Word, Ray of Sickness, Sanctuary

2nd level (3 slots): Blindness/Deafness, Lesser Restoration, Protection from Poison, Web

3rd level (3 slots): Dispel Magic, Counterspell, Conjure Animals (2 Giant Spiders), Mass Healing Word, Spirit Guardians, Tongues

4th level (3 slots): Arcane Eye, Death Ward, Divination, Freedom of Movement, Locate Creature, Secret Chest

5th level (3 slots): Commune, Flame Strike, Geas, Greater Restoration, Insect Plague, Mass Cure Wounds, Planar Binding, Teleportation Circle

6th level (2 slots) Globe of Invulnerability, Heal, True Seeing, Word of Recall

7th level (2 slots): Forcecage

8th level (1 slots): Antimagic Field 

9th level (1 slots): Time Stop, Mass Heal

Sunlight Sensitivity. While in sunlight, the drow has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Multiattack. The drow makes two Demon Staff attacks or one Demon Staff attack and three Tentacle Rod attacks.

Demon Staff. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) bludgeoning damage, or 8 (1d8 + 4) bludgeoning damage if used with two hands, plus 14 (4d6) psychic damage. The target must succeed on a DC 19 Wisdom saving throw or become 'frightened' (condition) of the drow for 1 minute. The 'frightened' target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Tentacle Rod. Melee Weapon Attack: +9 to hit, reach 15 ft., one creature. Hit: 3 (1d6) bludgeoning damage. If the target is hit three times by the rod on one turn, the target must succeed on a DC 15 Constitution saving throw or suffer the following effects for 1 minute: the target’s speed is halved, it has disadvantage on Dexterity saving throws, and it can’t use reactions. Moreover, on each of its turns, it can take either an action or a bonus action, but not both. At the end of each of its turns, it can repeat the saving throw, ending the effect on itself on a success.

Divine Flame (2/Day). A 10-foot-radius, 40-foot-high column of divine fire sprouts in an area up to 120 feet away from the drow. Each creature in the column must make a DC 20 Dexterity saving throw, taking 14 (4d6) fire damage and 14 (4d6) radiant damage on a failed save, or half as much damage on a successful one.

Summon Demon (1/Day). The drow attempts to magically summon a yochlol with a 30 percent chance of success. If the attempt fails, the drow takes 5 (1d10) psychic damage. Otherwise, the summoned demon appears in an unoccupied space within 60 feet of its summoner, acts as an ally of its summoner, and can’t summon other demons. It remains for 10 minutes, until it or its summoner dies, or until its summoner dismisses it as an action.

The drow can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The drow regains spent legendary actions at the start of her turn.

Compel Demon. An allied demon within 30 feet of the drow uses its reaction to make one attack against a target of the drow’s choice that she can see.

Demon Staff. The drow makes one Demon Staff attack.

Cast a Spell (Costs 2 Actions). The drow uses Spellcasting.