Eternal Lich

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Medium Undead, Neutral Evil

Armor Class 17 (mage armor)

Hit Points 120 (20d8+20)

Speed 30 ft. fly 60 ft.

STR 11 (+0)

DEX 16 (+3)

CON 12 (+1)

INT 20 (+5)

WIS 14 (+2)

CHA 18 (+4)

Saving Throws Con +5, Int +9, Wis +6

Skills Arcana +10, History +10, Perception +6

Damage Vulnerabilities radiant

Damage Resistances necrotic; cold

Damage Immunities poison, psychic

Condition Immunities charmed, frightened, paralyzed, poisoned

Senses darkvision 60 ft., passive Perception 16

Languages Common, Infernal, Primordial

Challenge 12 (8,400 XP) Proficiency Bonus +4

Legendary Resistance (3/Day). If the lich fails a saving throw, it can choose to succeed instead.

Spellcasting. The Lich is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 18, +10 to hit with spell attacks). It has the following spells prepared:

Undead Fortitude. If damage reduces the lich to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the lich drops to 1 hit point instead.

Spellcasting. Eternal Lich is a 9th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 18, +10 to hit with spell attacks). It has the following spells prepared:

1st level (4 slots): magic missile, shield

2nd level (3 slots): mirror image, cloud of daggers

3rd level (3 slots): vampiric touch, counterspell

4th level (3 slots): blight, greater invisibility

5th level (2 slots): contagion, cone of cold

6th level (1 slot): circle of death, disintegrate

7th level (1 slot): finger of death

8th level (1 slot): power word stun

9th level (1 slot): time stop

1/day each: power word kill, finger of death, dominate monster

3/day each: fireball, counterspell, lightning bolt

At will: mage hand, minor illusion, prestidigitation

Cantrips (at will): eldritch blast, chill touch

Actions

Multiattack. The Eternal Lich makes two Necrotic Touch attacks.

Necrotic Touch. Melee spell Attack: +10 to hit, reach 5 ft., one target. Hit: 18 (4d8) necrotic damage. The target must succeed on a DC 18 Constitution saving throw or take necrotic damage and be paralyzed until the end of its next turn.

Paralyzing Grasp (Recharge 5-6). The Lich focuses its power to attempt to paralyze a foe. One creature within 30 feet of the lich must succeed on a DC 18 Wisdom saving throw or be paralyzed for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Legendary Actions

The Eternal Lich 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. The lich regains spent legendary actions at the start of its turn.

Cast a Spell. The lich casts one spell of 3rd level or lower.

Misty Step. The lich magically teleports up to 30 feet to an unoccupied space that it can see.

Necrotic Drain (Costs 2 Actions). The lich targets one creature it can see within 60 feet of it. The target must make a DC 18 Constitution saving throw, taking 13 (3d8) necrotic damage on a failed save, or half as much on a successful one.

Environment Urban, Ruins

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Lore & Description

Appearance

The Eternal Lich is a skeletal figure cloaked in tattered, shadowy robes adorned with glowing arcane symbols. Its eye sockets blaze with an unholy blue flame, and a faint aura of necromantic power surrounds it. Wisps of darkness cling to its skeletal fingers, making its presence both mesmerizing and horrifying.

Behavior & Origins

Once a powerful wizard obsessed with the pursuit of immortality, the Eternal Lich has forsaken its humanity in an unholy ritual, binding its soul to its phylactery. Driven by an insatiable thirst for power, it seeks to dominate the living, creating thralls and using forbidden magic to expand its influence. In conversation, it is cold, calculating, and eerily persuasive, often tempting the unwary with promises of power in exchange for their loyalty.

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Generation Info

Original prompt:
"A lich who sought eternal life"

Created: Jan 28, 2026
Modified: May 31, 2026

Eternal Lich

Actions

Legendary Actions

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Lore & Description

Appearance

Behavior & Origins

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Generation Info

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