Sources
CR
Type
Size
Alignment
Movement

Tiax

Small Humanoid, Chaotic Neutral

Armor Class 13, 16 with mage armor
Hit Points 110 (20d6 + 40)
Speed 25 ft.
STR
11
+0
DEX
16
+3
CON
14
+2
INT
15
+2
WIS
19
+4
CHA
18
+4
Saving Throws WIS +8, CHA +8
Skills Deception +8, Insight +8, Performance +8, Persuasion +8
Senses darkvision 60 ft., passive Perception 14
Languages Celestial, Common, Gnomish
Challenge 9 (5,000 XP)

Traits

Gnome Cunning. Tiax has advantage on Intelligence, Wisdom, and Charisma saving throws against magic.

Special Equipment. Tiax wears a Ring of Resistance that grants him resistance to radiant damage.

Spellcasting

Spellcasting. Tiax casts one of the following spells, using Wisdom as the spellcasting ability (spell save DC 16):

At will: Bane, Disguise Self, Dispel Magic, Mage Armor, Mirror Image, Thaumaturgy

1/day each: Bestow Curse, Blindness/Deafness, Blink, Charm Person, Contagion, Dimension Door, Dominate Person, Hold Person, Pass Without Trace, Polymorph, Teleport

Actions

Touch of Decay. Melee Spell Attack: +8 to hit, reach 5 ft., one target. Hit:37 (6d10 + 4) necrotic damage.

Unholy Firebolt. Tiax causes unholy fire to flare up in a creature's space within 60 feet of him. The target must succeed on a DC 16 Dexterity saving throw or take 18 (4d8) necrotic damage plus 18 (4d8) poison damage.

Bonus Actions

Heal (2/Day). Tiax heals 70 hit points.

Lore

A long-serving cleric of Cyric, the god of lies, Tiax is absolutely certain of many things—most of them entirely untrue. After twenty years in Cyric's clergy, Tiax's mind has been twisted by the god's many tricks. Still, even so flavored by fantasy and deception, the favor of a god often proves a very powerful boon indeed. Whatever dire trouble Tiax finds himself in, even if it be the flames of the Nine Hells, his god will devise means of delivering him to safety—though often just by the skin…