Ankhtepot

Medium Undead, Lawful Evil

AC: 17

Initiative: +6 (16)

HP: 202 (27d8 + 81)

Speed: 30 ft., fly 30 ft. (hover)

STR: 18 (+4)
DEX: 10 (+0)
CON: 17 (+3)
INT: 15 (+2)
WIS: 20 (+5)
CHA: 16 (+3)

Saving Throws: Int +8, Wis +11

Skills: History +8, Perception +11, Religion +8

Vulnerabilities: fire

Immunities: necrotic; poison

Condition Immunities: charmed; exhaustion; frightened; paralyzed; poisoned

Senses: Truesight 60 ft., Passive Perception 21

Languages: Celestial, Common, Draconic

CR: 17 (XP 18,000, or 20,000 in lair; PB +6)

Darklord Restoration.

If Ankhtepot dies, he revives with all his Hit Points in 1d10 weeks somewhere in Har'Akir.

Legendary Resistance (3/Day, or 4/Day in Domain).

If Ankhtepot fails a saving throw, he can choose to succeed instead.

Magic Resistance.

Ankhtepot has Advantage on saving throws against spells and other magical effects.

Spellcasting.

Ankhtepot casts one of the following spells, requiring no spell components and using Wisdom as the spellcasting ability (spell save DC 19):

At will: Dispel Magic, Divination, Mage Hand (hand is Invisible), Power Word Stun

1/day each: Animate Dead, Sunburst

Actions

Multiattack.

Ankhtepot makes four Negative Energy Burst attacks. He can replace one attack with a use of Spellcasting to cast Power Word Stun.

Negative Energy Burst.

Melee or Ranged Attack Roll: +11, reach 5 ft. or range 60 ft. Hit: 26 (6d6 + 5) Necrotic damage.

Touch of Death (Recharge 6).

Ankhtepot touches one creature within 5 feet. If the creature has 80 Hit Points or fewer, it dies. Otherwise, it takes 52 (8d12) Necrotic damage.

Legendary Actions

Legendary Action Uses: 3. Immediately after another creature's turn, this creature can expend a use to take one of the following actions; it regains all expended uses at the start of each of its turns.

Death Strike.

Ankhtepot makes one Negative Energy Burst attack.

Hand of Fate.

Strength Saving Throw: DC 19, one Large or smaller creature Ankhtepot can see within 60 feet. Failure: 14 (2d8 + 5) Force damage, and the target is pushed or pulled up to 20 feet straight away or toward Ankhtepot. Success: Half damage only. Failure or Success: Ankhtepot can't take this action again until the start of his next turn.

Sands of Time.

Ankhtepot teleports up to 60 feet to an unoccupied space he can see. Charisma Saving Throw: DC 19, each creature in a 10-foot Emanation originating from Ankhtepot at his destination space. Failure: 11 (2d10) Necrotic damage, and the target magically ages 10 years. Success: Half damage only. Failure or Success: Ankhtepot can't take this action again until the start of his next turn.

Regional Effects

Har'Akir is altered by Ankhtepot's presence, creating the following effects:

Blistering Sun. Any outdoor area of Bright Light in Har'Akir is an area of extreme heat (see the Dungeon Master's Guide).
Closing the Borders. While in his domain, Ankhtepot can close or open the borders to Har'Akir at will. While the borders are closed, whirling sands fill the Mists surrounding Har'Akir. A creature that enters the Mists for the first time on a turn or starts its turn there takes 2d6 Slashing damage.
Control Undead. Undead of CR 5 or lower in Har'Akir have the Charmed condition and obey Ankhtepot's orders.

If Ankhtepot dies, these effects end immediately.

Find this creature in the encounter builder

Source: Ravenloft: The Horrors Within, p. 88 - Licenses and attribution