Sources
CR
Type
Size
Alignment
Movement

Cuprilach Rilmani

Medium Celestial, Neutral

Armor Class 16 (natural armor)
Hit Points 202 (27d8 + 81)
Speed 40 ft.
STR
12
+1
DEX
20
+5
CON
16
+3
INT
16
+3
WIS
15
+2
CHA
14
+2
Saving Throws DEX +9, CHA +6
Skills Perception +6, Stealth +13
Damage Resistances psychic
Senses truesight 120 ft., passive Perception 16
Languages telepathy 120 ft., any four languages
Challenge 12 (8,400 XP)

Spellcasting

Spellcasting. The cuprilach casts one of the following spells, requiring no material components and using Intelligence as the spellcasting ability (spell save DC 15):

At will: detect magic, disguise self

1/day each: alter self, fog cloud, silence

Actions

Multiattack. The cuprilach makes three Burnished Blade or Bolt attacks.

Burnished Blade. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit:8 (1d6 + 5) piercing damage plus 13 (2d12) psychic damage.

Bolt. Ranged Weapon Attack: +9 to hit, range 20/60 ft., one target. Hit:7 (1d4 + 5) piercing damage plus 13 (2d12) psychic damage.

Bonus Actions

Assassin's Agility. The cuprilach takes the Dash or Disengage action, or it makes one Burnished Blade attack.

Reactions

Uncanny Dodge. The cuprilach halves the damage it takes from an attack that hits it, provided it can see the attacker.

Lore

Cuprilachs infiltrate places of power throughout the multiverse, serving as spies and assassins. They strike surgically, following the orders of aurumachs without question or emotion.