Cron the Necromancer, Despair of Ferathane

Undying. Cron regains 10 hitpoints at the start of his turn.

Puppeteer. Allied undead within 30 feet of Cron cannot drop below 1 hitpoint.

Cage of Flesh and Bone. Creatures killed by Cron are raised as Zombies of Cron or Skeletons of Cron. They take their turn at the end of initiative order.

Call from the Otherplace. When Cron dies, all creatures within 60 feet of him suffer the effects of the spell Power Word Kill, as he drags their souls to the Afterlife with him.

Spellcasting. Cron is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 24, +21 to hit with spell attacks). Cron 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, dimension door

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): dominate monster, power word stun

9th level (1 slot): power word kill

Turn Immunity. Cron lis immune to any effect that turns undead.

Multi-attack. Cron uses two of the actions below. He may choose the same action twice if he chooses to.

Woemaker (Mace). Cron attacks using his weapon. Range, 5 feet. +21 to hit. A creature hit by this weapon takes 2d8+12 Bludgeoning damage. Regardless of whether or not Cron hits, his swing generates a 30 foot cone of violent darkness. All creatures caught in the cone must succeed a DC 24 Dexterity Saving Throw. On a failure, a creature takes 2d12 Necrotic damage plus 2d12 Force damage, on a success they take half as much.

Implode. Cron chooses a point within 240 feet of himself. All creatures within 15 feet of that point must succeed a DC 24 Strength Saving Throw or be pulled into the center of an implosion, taking 4d8 bludgeoning damage. If three or more corpses are caught in this implosion, a Flesh Golem under Cron's control is created.

Blessing of the Dark One. Cron bestows an allied undead with Haste. This lasts until the undead reaches 0 hitpoints. Cron can only bless one undead in this way, and may not choose himself as the undead. Once that undead dies he may choose a new one to bless if he uses this action again.

Hunger for Souls. Cron makes a grapple check against a creature within 5 feet of him, if he is successful, the creature becomes Vulnerable to Necrotic damage and takes 3d12 Necrotic damage. Cron heals for the damage dealt. A creature effected by this Vulnerabilty can have it removed by Lesser or Greater Restoration, or the Remove Curse Spell.

Create Nightmare. Cron turns a corpse within 5 feet of himself into one of the following undead under his control: Wickerknight, Subvaunte, Zombie of Cron, Skeleton of Cron, Ghost, Wraith, Shadow, Blade Puppet, Death Master, Demighost, or Bodak.

Soul Cage. Cron causes a creature within 120 feet of himself to fail to teleport or planeshift. This does not include Demiplane or Magnificent Mansion.