Baba Diss: The Sorcerer Queen

Dark Psychic Weapon. Baba Diss' weapon attacks are magical. When Baba Diss hits with any weapon, the weapon deals an extra 3d8 psychic damage and 3d8 necrotic damage (included in the attack).

Legendary Resistance (3/Day). If Baba Diss fails a saving throw she can choose to succeed instead.

Magic Resistance. Baba Diss has advantage on saving throws against spells and other magical effects.

Innate Spellcasting (Psionics). Baba Diss' innate spellcasting ability is Intelligence (spell save DC 21, +13 to hit with spell attacks). She can cast the following spells without requiring components:

At will: detect evil and good, detect magic, detect thoughts, invisibility, mage hand (the hand is invisible), sending, shield

3/day: animate dead, banishment, Bigby's hand, dimension door, dominate monster, enhance ability, telekinesis, teleport (self only)

1/day: astral projection, conjure elemental (any except water)

Spellcasting. Baba Diss is a 20th-level spellcaster. Her spellcasting ability is Charisma (spell save DC 21, +13 to hit with spell attacks). She can cast the following spells:

Cantrips (At will): chill touch, decompose, fire bolt, sapping sting, spare the dying, toll the dead

1st level (4 slots): cause fear, false life, inflict wounds, ray of sickness

2nd level (3 slots): blindness/deafness, gentle repose, ray of enfeeblement, wither and bloom

3rd level (3 slots): animate dead, bestow curse, counterspell, vampiric touch

4th level (3 slots): blight, shadow of moil, spirit of death

5th level (3 slots): contagion, enervation, negative energy flood, 

6th level (2 slots): circle of death, disintigrate, soul cage

7th level (2 slots): finger of death, tether essence

8th level (1 slot): Abi-Dalzim's horrid withering, clone

9th level (1 slot): power word kill, time ravage

Sorcery Points. Baba Diss has 20 sorcery points. She regains all her sorcery points when she finishes a long rest. She can spend her sorcery points on the following options:

Distant Spell. When Baba Diss casts a spell that has a range of 5 feet or greater, she can spend 1 sorcery point to double the range of the spell. When Baba Diss casts a spell that has a range of touch, she can spend 1 sorcery point to make the range of the spell 30 feet.

Empowered Spell. When Baba Diss rolls damage for a spell, she can spend 1 sorcery point to reroll up to 5 damage dice. She must use the new rolls. Baba Diss can use Empowered spell even if she has used a different Metamagic option during the casting of the spell.

Heightened Spell. When Baba Diss casts a spell that forces a creature to make a saving throw to resist its effects, she can spend 3 sorcery points to give one target of the spell disadvantage on its first saving throw made against the spell.

Subtle Spell. When Baba Diss casts a spell, she can spend 1 sorcery point to cast it without any somatic or verbal components.

Defiler. Baba Diss uses defiling magic to draw power for her spellcasting. Whenever Baba Diss casts a spell, all vegetation, plant life, and small creatures within 30 feet of her whither, die, and turn to ash. Any creature within 30 feet of her must make a DC 21 saving throw taking 2d12 necrotic damage on a fail, or half as much necrotic damage on a success. Any creature whose hit points are reduced to 0 from this effect are turned to ash. 

Master Defiler's Defense. If Baba Diss takes damage from a spell attack that does not cause radiant damage, the damage is reduced by 2d10 points.

Multiattack. Baba Diss can use her Frightful Presence. She then makes three melee weapon attacks.

Longsword. Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 9 (1d8 + 5) slashing damage plus 27 (6d8) psychic damage.

Frightful Presence. Each creature of Baba Diss' choice that is within 120 feet of Baba Diss and aware of her must succeed on a DC 21 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to Baba Diss' Frightful Presence for the next 24 hours.

Scorching Necrotic Breath (Recharge 5-6). Baba Diss spews a 60-foot-cone of scalding necrotic energy. Each creature in the area must succeed on a DC 19 Constitution saving throw. A creature that fails its saving throw takes 36 (8d8) necrotic damage plus 36 (8d8) fire damage and is blinded for 1 minute. A creature can repeat its saving throw at the end of each of its turns, ending the effect on itself with a success. On a successful saving throw, a creature takes half as much damage and isn't blinded.

Touch of the Defiler (3/Day). Melee Spell Attack: Baba Diss can drain the lifeforce from creatures and convert it into stored magical energy or to regain health. +13 to hit, reach 5 ft., one creature. Hit: 12 (3d6) necrotic damage, and the target's maximum hit points are reduced by an amount equal to the necrotic damage taken. Additionally, Baba Diss regains 1 sorcery point or regains hit points equal to the necrotic damage taken. Her choice.

Summon Gaacore the Nightwalker (1/Day). Baba Diss' lover is a powerful Nightwalker named Gaacore. Baba Diss summons Gaacore in an unoccupied space within 30 feet of her that she can see. Gaacore is an ally of Baba Diss and her allies. He rolls initiative and acts on his own. He uses the Nightwalker stat block. If Gaacore is targeted by a banishment spell, he is sent back to the shadowfell. Otherwise, Gaacore fights until he is defeated, in which case he disappates in a shadowy smoke.

Baba Diss 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. Baba Diss regains spent legendary actions at the start of her turn.

Attack. Baba Diss makes a melee weapon attack.

At-Will Spell. Baba Diss uses one of her at-will spells (innate or otherwise).

Summon Undead (Costs 3 Actions). Up to eight skeletons or zombies appear in unoccupied spaces within 30 feet of Baba Diss and remain until destroyed. Undead summoned in this way roll initiative and act on the next available turn. Baba Diss can have up to eight undead summoned by this ability at a time.

Teleport (Costs 2 Actions). Baba Diss and any equipment she is wearing or carrying teleports to an unoccupied space she can see within 60 feet of her.