Dissimortuum

Medium Undead, chaotic evil

Armor Class 15 (natural armor)

Hit Points 112 (15d8+45)

Speed walk +30, climb +30

Challenge 7

STR
14
+2
DEX
10
+0
CON
16
+3
INT
8
-1
WIS
11
+0
CHA
18
+4

Saving Throws con +6

Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks

Damage Immunities necrotic, poison

Condition Immunities charmed, exhaustion, poisoned

Senses darkvision 60 ft., passive Perception 10

Languages Common

Special Abilities

Spider Climb. The dissimortuum can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Actions

Multiattack. The dissimortuum makes three claw attacks.

Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 15 (3d8 + 2) slashing damage.

Terrifying Mask. Each non-undead creature within 60 feet of the dissimortuum that can see it must make a successful DC 15 Wisdom saving throw or be frightened for 1d8 rounds. If a target's saving throw is successful or the effect ends for it, the target becomes immune to all dissimortuum's terrifying masks for the next 24 hours.

Source: Tome of Beasts · OGL/Open