Nester

Medium Undead, Chaotic Evil

Armor Class 12, 15 with mage armor

Hit Points 99 (18d8 + 18)

Speed 30 ft.

STR

DEX

CON

INT

WIS

CHA

Saving Throws INT +9, WIS +6

Skills Arcana +13, History +13

Damage Resistances damage from spells; nonmagical bludgeoning, piercing, slashing, (from stoneskin)

Senses darkvision 60 ft., passive Perception 12

Languages Auran, Common, Draconic, Dwarvish, Giant, Terran, but can't speak (he uses Rary's telepathic bond to communicate)

Challenge 12 (8,400 XP)

Traits

Magic Resistance. Nester has advantage on saving throws against spells and other magical effects.

Spellcasting

Spellcasting. Nester is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). The archmage can cast disguise self and invisibility at will and has the following wizard spells prepared:

Cantrips (at will): fire bolt, light, mage hand, prestidigitation, shocking grasp

1st level (4 slots): detect magic, identify, mage armor*, magic missile

2nd level (3 slots): detect thoughts, mirror image, misty step

3rd level (3 slots): counterspell, animate dead, lightning bolt

4th level (3 slots): blight, fire shield, stoneskin*

5th level (3 slots): cone of cold, Rary's telepathic bond, wall of force

6th level (1 slot): globe of invulnerability

7th level (1 slot): teleport

8th level (1 slot): mind blank*

9th level (1 slot): time stop

*Nester casts these spells on itself before combat.

Actions

Dagger. Melee or Ranged Weapon Attack: +6 to hit, reach 5 ft. or range 20/60 ft., one target. Hit:4 (1d4 + 2) piercing damage.

Lore

The floating skull and hanging skeletal arms are all that remain of him; they move like they're attached to an invisible body.