Special Equipment. Zybilna wears an amulet of the planes and a robe of the archmagi. Zybilna keeps a control gem of a gray slaad in the pocket of her robe. Zybilna also is attuned to Iggwilv's Cauldron, and she can change it from one form to another.
Boon of Immortality. Zybilna is immune to any effect that would age her, and she can't die from old age.
Magic Resistance. Zybilna has advantage on saving throws against spells and other magical effects. (This trait is bestowed by her robe of the archmagi.)
Legendary Resistance (3/Day). If Zybilna fails a saving throw, she can choose to succeed instead.
Spellcasting. Zybilna is an 20th-level spellcaster. Her spellcasting ability is Intelligence (spell save DC 24, +16 to hit with spell attacks). Zybilna can cast disguise self and invisibility at will and has the following wizard spells prepared:
Cantrips (at will): fire bolt, light, mage hand, message, prestidigitation, shocking grasp
1st level (4 slots):charm person, detect magic, identify, mage armor*, magic missile, Tasha's caustic brew, Tasha's hideous laughter
2nd level (3 slots): detect thoughts, mirror image, misty step, Tasha's mind whip
3rd level (3 slots): counterspell, fly, lightning bolt
4th level (3 slots): banishment, fire shield, polymorph, stoneskin*
5th level (3 slots): cone of cold, modify memory, scrying, wall of force
6th level (1 slot): globe of invulnerability, mass suggestion, Tasha's bubbling cauldron, Tasha's otherworldly guise
7th level (1 slot): teleport
8th level (1 slot): maze, mind blank*
9th level (1 slot): time stop, wish
*Zybilna casts these spells on herself before combat.
Multiattack. Zybilna makes two bewitching bolt attacks.
Bewitching Bolt. Melee or Ranged Spell Attack: +16 to hit, reach 5 ft. or range 120 ft., one target. Hit: 25 (5d6 + 8) lightning damage, and if the target is a creature, it must succeed on a DC 22 Wisdom saving throw or be charmed by Zybilna until the start of her next turn.
Abyssal Rift (Recharge 5–6). Zybilna opens a momentary Abyssal rift within 120 feet of her. The rift is a 20-foot-radius sphere. Each creature in that area must make a DC 22 Constitution saving throw, taking 40 (9d8) necrotic damage on a failed save, or half as much damage on a successful one. In addition, there is a 50 percent chance that 3 hezrous then appear in unoccupied spaces in the sphere. They act as Zybilna's allies, take their turns immediately after hers, and can't summon other demons. They remain until they die or until Zybilna dismisses them as an action.
Fey Step. Zybilna teleports, along with any equipment she is wearing or carrying, to an unoccupied space she can see within 30 feet of her.
Negate Spell (2/Day). When Zybilna sees a creature within 60 feet of her casting a spell, she tries to interrupt it. If the creature is casting a spell using a spell slot of 8th level or lower, its spell fails and has no effect. If it is casting a 9th-level spell, it must succeed on a DC 22 Intelligence saving throw, or the spells fails and has no effect.
Zybilna can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. Zybilna regains spent legendary actions at the start of its turn.
Witchcraft. Zybilna uses spellcasting or fey step.
Dark Speech (Costs 2 Actions). Zybilna utters a phrase in a forbidden language and targets one or two creatures she can see within 60 feet of her. Each target must succeed on a DC 22 Wisdom saving throw or take 11 (2d10) psychic damage and be frightened of Zybilna for 1 minute. A target can repeat the save at the end of each of its turns, ending the effect on itself on a success and thereby becoming immune to Zybilna's Dark Speech for 24 hours.
Fey Beguilement (Costs 3 Actions). Zybilna targets one creature she can see within 60 feet of her. The target must succeed on a DC 22 Charisma saving throw or be possessed by a fey spirit. While possessed, the target must obey Zybilna's commands. The target can repeat the saving throw at the end of each of its turns, banishing the fey spirit and ending the effect on itself on a success.
Description
Iggwilv created the persona of Zybilna to hide from her most hated enemies. In the Feywild, she raised a magnificent palace and set about establishing herself as the benevolent archfey Zybilna of Prismeer, avatar of mercy for destitute mortals. Her closest allies saw the cracks in her facade, flashes of arrogance and cruelty that conflicted with her kindly persona, but they ascribed this behavior to the mercurial nature of archfey.
Iggwilv's path to greatness began when she was adopted by the mother of all witches, Baba Yaga, who named her Natasha. On the worlds of the Material Plane, she was better known as Tasha the Witch, the inventor of the spells Tasha's hideous laughter, Tasha's bubbling cauldron, Tasha's otherworldly guise, Tasha's mind whip and Tasha's caustic brew. Tasha's magic-fueled ambitions brought her into contact with demons and demon lords, which she subjugated and used against her enemies. Tasha became known on the world of Oerth as Iggwilv the Witch Queen, a peerless wizard and conqueror. It was she who wrote the Demonomicon of Iggwilv—the greatest of all treatises on the Abyss and its demonic inhabitants.
Iggwilv learned several dark secrets while studying the Abyss, including the ability to summon demons and demonic spirits. But in her quest for absolute power, she made too many enemies and underestimated their determination to destroy her, including that of the Demon Lord Fraz-Urb’luu. So she fled to other worlds and across planes to escape the worst of them. She eventually took a page from her mother's book and sequestered herself in the Feywild, where she assumed the guise of an archfey and carved out a spectacular domain for herself. Gradually, Iggwilv transformed into a Fey creature, though she outwardly appears human. Her disposition changed over time as well, as she became less interested in personal power and more interested in exploring her fey existence.
Iggwilv was a brilliant, calculating figure and hardly prone to emotional outbursts, but as Zybilna, she allows her motions to run rampant and is more likely to find herself in the group of happiness, anger, or melancholy. this is the price she pays to exert control over the Feywild and imposer will on the domain of Prismeer.
Zybilna is a fairy godmother to mortals. She created the Witchlight Carnival as a means by which mortals could enter her realm and beseech her aid. Zybilna can assume many forms and is brilliant, secretive, and wise. When she presents herself to mortals, Zybilna usually assumes the form of a statuesque woman with long white hair and a small tattoo shaped like a chicken's foot below one eye. Zybilna is also the archfey patron and inspiration of several warlocks, including Madryck Roslof and Kettlesteam the kenku.
Personality Trait. "I have become more temperamental in my old age"
Ideal. "I used to believe that emotions and kindness were signs of weakness. Now I see their strength."
Bond. "Prismeer is my home now."
Flaw. "My mother, Baba Yaga, warned me that arrogance would be my undoing, ‘as sure as stars light the night sky.’ She might be right."