Umbral Convergence (Recharges after a Short or Long Rest). If Valindra would be reduced to 0 hit points, her current hit point total instead resets to 135 hit points, it recharges her Lashing Shadows, and she regains any expended uses of Legendary Resistance. Additionally, Valindra can now use the options in the “Mythic Actions” section for 1 hour. Award a party an additional 120,000 XP (240,000 XP total) for defeating Valindra after its Umbral Convergence activates.

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

Rejuvenation. If she has a phylactery, Valindra gains a new body in 1d10 days, regaining all its hit points and becoming active again. The new body appears within 5 feet of the phylactery.

Spellcasting. Valindra is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 20, +12 to hit with spell attacks). She has the following wizard spells prepared:

Cantrips (at will): mage hand, prestidigitation, ray of frost

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

2nd level (3 slots): acid arrow, detect thoughts, invisibility, mirror image

3rd level (3 slots): animate dead, counterspell, dispel magic, fireball

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

5th level (3 slots): cloudkill, scrying

6th level (1 slot): disintegrate, globe of invulnerability

7th level (1 slot): finger of death, plane shift

8th level (1 slot): maddening darkness, demiplane

9th level (1 slot): psychic scream

Turn Resistance. Valindra has advantage on saving throws against any effect that turns undead.

Paralyzing Touch. Melee Spell Attack: +12 to hit, reach 5 ft., one creature. Hit: 10 (3d6) cold damage. The target must succeed on a DC 18 Constitution 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.

Lashing Shadows (Recharge 5–6). Each creature within 60 feet of Valindra, except other undead, must succeed on a DC 16 Dexterity saving throw or take 27 (6d8) necrotic damage.

Magical Illusion. As a bonus action, Valindra can mask her shriveled flesh and appear to be a living elf. This magical illusion lasts until she ends it as a bonus action. The effect also ends if Valindra drops to 30 hit points or fewer, or if dispel magic is cast on her.

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

Cantrip. Valindra casts a cantrip.

Channel Negative Energy (Costs 2 Actions). Valindra magically unleashes negative energy. Creatures within 60 feet of her, including ones behind barriers and around corners, can't regain hit points until the end of Valindra's next turn.

Call the Void (Costs 3 Actions). Each creature that is not a construct or undead within 30 feet of Valindra must make a DC 22 Constitution saving throw against Valindra’s attempt to unmake life, taking 42 (12d6) necrotic damage on a failed save, or half as much damage on a successful one. Valindra then regains a number of hit points equal to half the total damage taken by all affected creatures.

If Valindra's Umbral Convergence trait has activated in the last hour, she can use the options below as legendary actions.

Spell Gem (Costs 2 Actions). Valindra magically crushes a nearby Spell Gem, which triggers an explosion dealing 8d6 necrotic damage to all creatures within 10 feet of it. In addition, roll a 1d6 and refer to the chart below using Valindra's prepared spells.

1. Cast a 3rd Level Spell
2. Cast a 4th Level Spell
3. Cast a 5th Level Spell
4. Cast a 6th Level Spell
5. Cast a 7th Level Spell
6. Cast an 8th Level Spell

Dark Swarm (Recharges after a Week). Orbs of dark matter plummet to the ground at four different points you can see within range. Each creature in a 40-foot-radius sphere centered on each point you choose must make a Dexterity saving throw. The sphere spreads around corners. A creature takes 20d6 necrotic damage on a failed save, or half as much damage on a successful one. A creature in the area of more than one necrotic burst is affected only once.

The spell damages objects in the area and ignites flammable objects that aren't being worn or carried.