Medium Celestial, Lawful Neutral
Armor Class 20
Hit Points 405 (30d12 + 210)
Speed 50 ft.
STR
10 (+0)
DEX
30 (+10)
CON
24 (+7)
INT
20 (+5)
WIS
20 (+5)
CHA
30 (+10)
Saving Throws STR +8, DEX +18, CON +15, CHA +18
Skills Arcana +21, History +13, Perception +21
Damage Resistances Bludgeoning, Piercing, and Slashing from Magic Weapons
Damage Immunities Necrotic; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks
Condition Immunities Charmed, Deafened, Exhaustion, Frightened, Poisoned
Senses Darkvision 120 ft., Truesight 60ft., Unknown Omniscient within Barcomber Castle Prison and The Shadowkeep , Passive Perception 23
Languages Abyssal, Celestial, Common, Draconic, Infernal
Challenge 26 (90,000 XP)
Proficiency Bonus +8
Traits

Legendary Resistance (3/day). If Atia fails a saving throw, she can choose to succeed instead.

Limited Magic Immunity. Unless she wishes to be affected, Atia is immune to spells of 4th level or lower. She has advantage on saving throws against all other spells and magical effects.

Magic Weapons. Atia's weapon attacks are magical

Innate Spellcasting. Atia's can innately cast a selection of spells (save DC 27):
At will: Detect Magic,
4/day each: Soul Cage, Dispel Magic, 
2/day each: Illusory Dragon

 

Actions

Multiattack. Atia can make three Umbraleone attacks, or two Black Star attacks.

Umbraleone. Melee Weapon Attack: +19 to hit, reach 5 ft., 1 target. Hit: 28 (3d8+ 15) necrotic or radiant damage.

Blackstar (6 uses. Recharge 1d4 on 5-6). Atia picks a point and sends one of the stars floating around her shoulders flying towards the location. On impact the blackstar explodes. If a target is directly impacted they takes 26 (4d12) radiant damage, while any other creature in the blast area can make a DC 27 Dexterity saving throw. On a failed save, a creature takes 13 (2d12) radiant damage. On a successful save, a creature takes half as much damage.

Frightful Presence (Recharge 6). Each creature of  choice that is within 100 feet of Atia and aware of her must succeed on a DC 27 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 Atia's Frightful Presence for the next 24 hours.

Reactions

Unweave. When Atia takes damage from an attack she can unwind her shadowy form to lessen the harm done. When Atia takes damage she can use her reaction to reduce the damage to 0 and teleport to a space up to 120 feet away to an unoccupied space that is in dim light or shadow.

Legendary Actions

Atia 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. Atia regains spent legendary actions at the start of her turn.

Umbraleone. Atia makes one attack with her shadow blade.
Blackstar. Atia makes one attack with her black stars.
Unwoven Shift (Costs 2 Actions). Atia unwinds her form and reforms up to 120 feet away to an unoccupied space. The space must be in dim light or shadow.
Shadow Binding (Costs 3 Actions). Atia bends the shadows to her will to bind a target. Atia targets one creature she can see within 60 feet of her. The target is bound in shadowy chains and restrained. The restrained target takes 39 (6d12)  necrotic damage at the start of each of its turns. At the end of its turns, the target makes a DC 27 Strength saving throw, ending the effect on itself on a success.

Description

Atia Xixbris is 'The Queen' of Barcomber Castle Prison, a fortress on the Shadowfell built by Atia during her lifetime. Nearing the end of her life she ascended to minor divinity, combining divine assistance, complex magics, and the worship of a cult on the  Material Plane devoted to the protection of portals and gates. She stands watch over beings from across the multiverse, keeping them weak through a twisting of the Shadowfell's innate ability to drain energy from it's denizens. 

She has long since shed her mortality and uncountable millennia have hardened her spirit. Accompanied through the eternity by her companion in life, who she imbued with some of her divine power, she has not fallen to the madness that permeates the Plane. While unlikely friendly towards anyone who comes knocking, those who seek her services to seal away a powerful entity or who do her the service of returning a being somehow freed from her capture will find her amiable to pleasant. While she lacks the ability to grant the divine gifts of the gods of the great pantheon she is still an extremely knowledgeable and powerful being, capable of feats beyond the comprehension of mortals, in possession of items of items of great power, and even able to make introductions across the multiverse.

"A large humanoid figure stands before you, it's body and clothing appear to be made of woven shadow. Even though it's body is little more than darkness you can clearly make out a slender feminine form and luxuriously, even regal, styled clothing wrapping the form. A pair of glowing eyes shine in the being's face, pools of divine light. Her hair is wrapped up into an elegant and elaborate bun held in place by an ornate heptagonal star shaped pin made of a white crystal material. A set of stars hover around her shoulders like a shawl of dim light."

Atia wields Umbraleone, short sword style weapons created from shadows and the energy she draws from both her divinity and her captives, a modified form of shadow blades. In addition Atia has a set of six star-like motes of energy, Black Stars, that glow a strange shadowy light. She can use these as a weapon, shooting them at targets, that explode with raw energy on impact. Beyond these weapons, Atia's spellcasting abilities in life have evolved into the ability to innately cast some spells that she has mastered over the ages.

Lair and Lair Actions

Atia Xixbris, the Queen


 

Atia's home on the Shadowfell

Lair Actions

On initiative count # (losing initiative ties), the [monster name] takes a lair action to cause one of the following effects; the [monster name] can’t use the same effect two rounds in a row:

  • Enter a description for a lair action.
  • Enter a description for a lair action.

Regional Effects

The region containing a legendary [monster name]’s lair is [enter the effect description], which creates one or more of the following effects:

  • Enter a regional effect description.
  • Enter a regional effect description.

If the [monster name] dies, these effects fade over the course of #d# days.

Monster Tags: NPC

Brokenkey