Archlich Yiven Phase 1/2

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

Unusual Nature. Yiven doesn’t require air, food, drink, or sleep.

Spellcasting. Yiven is a 20th-level spellcaster. Her spellcasting ability is Intelligence (spell save DC 23, +15 to hit with spell attacks). Yiven has the following wizard spells prepared:

Cantrips (at will):  ray of frost, shocking grasp, frostbite, chill touch, toll the dead,

1st level (at will): Burning Hands, Detect Magic, Cause Fear, Ice Knife, Magic Missile, Ray of Sickness, Shield

2nd level (at will): Acid Arrow, Aganazzar's Scorcher, Blindness/Deafness, Mirror Image, Misty Step, Scorching Ray

3rd level (at will): Dispel Magic, Enemies Abound, Fireball, Lightning Bolt, Sleet Storm

4th level (3 slots): Blight, Confusion, Greater Invisibility,

5th level (3 slots): Arcane Hand, Enervation, Telekinesis

6th level (3 slots): Chain Lightning, Circle of Death, Disintegrate, Globe of Invulnerability, True Seeing

7th level (3 slots): Crown of Stars, Power Word Pain, Reverse Gravity,

8th level (2 slots): Sunburst, Abi-Dalzim's Horrid Wilting

9th level (2 slots): Power Word Kill

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

Multispell. Yiven can cast two spells per action, if both spells are 3rd level or lower

Dominate Will (3/Day). Yiven targets one creature she can see within 30 feet of her. The target must succeed on a DC 18 Intelligence saving throw or be magically charmed by Yiven for 24 hours, until Yiven dies, or until she is on a different plane of existence from the target. The charmed target is under Yiven's control and can't take reactions, and Yiven and the target can communicate telepathically with each other over any distance.

The charmed target can repeat this saving throw at the beginning of each of their turns.

Temporal Shift. Yiven displaces herself in time, teleporting to any location she can see within 60ft.

Improved Counterspell. Yiven utters an otherworldly word to interrupt a creature she can see that is casting a spell. If the spell is 4th level or lower, it fails and has no effect. If the spell is 5th level or higher, Yiven makes an Intelligence check (DC 10 + the spell’s level). On a success, the spell fails and has no effect. Whatever the spell’s level, the caster takes 10 psychic damage if the spell fails.