If you'd like to pull back the curtain and find out what Azorazul really is, highlight the text below. You should consider this a kind of Spoiler, so if knowing the details takes away from your enjoyment, you should not read this until after the season finale.
DEMONIC LICH/AZORAZUL STAT BLOCK
STATS
ARMOR CLASS: 19
HIT DICE: 11
NO. OF ATTACKS: I
DAMAGWATTACK: I- 10
SPECIAL ATTACKS: Spells & Innate Powers
SPECIAL DEFENSES: + 1 or better weapon needed to hit
MAGIC RESISTANCE: None
INTELLIGENCE: Supra-genius
SIZE: M
DESCRIPTION
A demonic lich is a terrible creature that combines the worst aspects of a powerful demon and the traditional lich. Unlike an actual lich, the demonic lich does not achieve its final form as a result of its own efforts. Instead, they are gifted their powers by a demon lord.
A demonic lich wants, more than anything, to reside in the prime material plane where it can rule mortals as a tyrant, create misery on an enormous scale, and feed on limitless souls.
They accomplish this by possessing a powerful mortal. When they do, they gain the powers of the host, and for this reason, demonic liches prefer to inhabit the bodies of high level warriors or magic users.
In addition to the powers of the host, the demonic lich always has access to the following abilities:
Cold touch for 1-10 points of damage
Telekinesis up to 300 pounds
Clairaudience
Infravision
ESP
Charm Person
Suggestion
Create Darkness 30' Radius
Possession
The following spells or attack forms have no effect on demon liches: charm, sleep, enfeeblement, polymorph, cold, electricity, insanity or death spells/symbols.
Description: A demon lich appears exactly as the person it possesses. In its natural form it appears as a ghostly figure that levitates and floats about, nearly silent. In this form, it is human-like, but with elongated eyes, slits in place of a nose, and small sharp teeth
AZORAZUL
Azorazul is an ancient being of pure evil whose only purpose and desire is create as much suffering as possible. After possessing the arch mage, Carrick Malmar, it gained access to the following spells (determined in advance by random dice rolls):
4 at First Level
Detect Magic, Magic Missile, Read Languages, Sleep
4 at Second Level
Phantasmal Force, Wizard Lock, Locate Object, Levitate
3 at Third Level
Invisibility 10' Radius, Hold Person, Clairvoyance
3 at Fourth Level
Polymorph Other, Improved Invisibility, Wall of Ice
3 at Fifth Level
Feeblemind, Hold Monster, Animate Dead
2 at Sixth Level
Projected Image, Control Weather