Sources
CR
Type
Size
Alignment
Movement

Lynx Creatlach

Medium Undead (tiefling), Lawful Evil

Armor Class 13 (leather armor)
Hit Points 136 (16d8 + 64)
Speed 30 ft.
STR
18
+4
DEX
14
+2
CON
18
+4
INT
13
+1
WIS
16
+3
CHA
18
+4
Saving Throws STR +7, CON +7, WIS +6, CHA +7
Damage Resistances necrotic, psychic
Damage Immunities poison
Condition Immunities Charmed, Exhaustion, Frightened, Paralyzed, Poisoned, Stunned
Senses darkvision 60 ft., passive Perception 13
Languages Common, Infernal
Challenge 5 (1,800 XP)

Traits

Special Equipment. Lynx's crystal eye is a magically shrunken crystal ball of true seeing. One of her teeth is a refashioned ring of mind shielding, while another has been magicked to place her under a permanent Nystul's magic aura spell, concealing the magic of these items and hiding her true nature from magic or features that can detect undead.

Aversion of Fire. If Lynx takes fire damage, she has disadvantage on attack rolls and ability checks until the end of her next turn.

Immutable Form. Lynx is immune to any spell or effect that would alter her form.

Lightning Absorption. Whenever Lynx is subjected to lightning damage, she takes no damage and instead regains a number of hit points equal to the lightning damage dealt.

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

Regeneration. Lynx regains 10 hit points at the start of her turn. If she takes fire or radiant damage, this trait doesn't function at the start of her next turn. Lynx's body is destroyed only if she starts her turn with 0 hit points and doesn't regenerate.

Actions

Multiattack. Lynx makes two shortsword attacks.

Shortsword. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit:7 (1d6 + 4) piercing damage.

Lore

The powerful relics possessed by Lynx Creatlach and Sir Ursas (see the "Special Equipment" section of their stat blocks) have been granted to them by their diabolical masters, and are not meant to be claimed as treasure. If either agent is killed in the course of the adventure, their special equipment vanishes, returning to Bel or Zariel.