Skull Lord

Medium undead, lawful evil
Armor Class 18 (plate)
Hit Points 105 (14d8 + 42)
Speed 30 ft.
STR
14 (+2)
DEX
16 (+3)
CON
17 (+3)
INT
16 (+3)
WIS
15 (+2)
CHA
21 (+5)
Skills Athletics +7, History +8, Perception +12, Stealth +8
Damage Resistances cold, necrotic; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, poisoned, stunned, unconscious
Senses darkvision 60 ft., passive Perception 22
Languages the languages it knew in life
Challenge 15 (13000 XP)
Evasion.
Legendary Resistance (3/Day).
Master of the Grave.
Spellcasting.
ACTIONS
Multiattack.
Bone Staff.
LEGENDARY ACTIONS
Bone Staff (Costs 2 Actions).
Cantrip.
Move.
Summon Undead (Costs 3 Actions).

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

Mordenkainen´s Tome of Foes
Skull Lord