Medium monstrosity, lawful evil

Armor Class: 15 (natural armor)

Hit Points: 78 (12d8 + 24) 12d8+24

Speed: 30 ft

STR

17 +3

DEX

12 +1

CON

15 +2

INT

6 -2

WIS

7 -2

CHA

5 -3

Skills: Athletics +6

Damage Resistances: bludgeoning, piercing, and slashing while in dim light or darkness

Senses: darkvision 60 ft., passive Perception 8

Languages: Common

Challenge Rating: 7

Actions

Multiattack. The Lost makes two arm spike attacks.   Arm Spike. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 14 (2d10 + 3) 2d10+3 piercing damage.   Embrace. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 25 (4d10 + 3) 4d10+3 piercing damage, and the target is grappled (escape DC 14) if it is a Medium or smaller creature. Until the grapple ends, the target is frightened, and it takes 27 (6d8) 6d8 psychic damage at the end of each of its turns. The Lost can embrace only one creature at a time.

Reactions

Tightening Embrace. If the Lost takes damage while it has a creature grappled, that creature takes 18 (4d8) 4d8 psychic damage.