Boneclaw

Large undead, chaotic evil
Armor Class 16 (natural armor)
Hit Points 127 (17d10 + 34)
Speed 40 ft.
STR
19 (+4)
DEX
16 (+3)
CON
15 (+2)
INT
13 (+1)
WIS
15 (+2)
CHA
9 (-1)
Saving Throws Dex +7, Con +6, Wis +6
Skills Perception +6, Stealth +7
Damage Resistances cold, necrotic; bludgeoning, piercing, and slashing from nonmagical attacks
Condition Immunities charmed, exhaustion, frightened, paralyzed, poisoned
Senses darkvision 60 ft., passive Perception 16
Languages Common plus the main language of its master
Challenge 12 (8400 XP)
Rejuvenation.
Shadow Stealth.
ACTIONS
Multiattack.
Piercing Claw.
Shadow Jump.
REACTIONS
Deadly Reach.

This full creature's stat block is not available (not OGL).

Mordenkainen´s Tome of Foes
Boneclaw