Vrykolakas

Medium undead (canine), chaotic evil

Armor Class 15 (natural armor)
Hit points 75 (10d8 + 30)
Speed 30 ft. (40 ft. in wolf form)

STR	DEX	CON	INT	WIS	CHA
16 (+3)	16 (+3)	16 (+3)	11 (+0)	11 (+0)	12 (+1)

Damage Immunities bludgeoning, piercing, and slashing from nonmagical attacks that aren’t silvered
Damage Resistances cold, lightning, necrotic
Skills Perception +3, Stealth +5
Senses darkvision 60 ft., passive Perception 13
Languages the languages it knew in life
Challenge 6 (2,300 XP)

Special Traits

• Keen Hearing and Smell. The vrykolakas has advantage on Wisdom (Perception) checks that rely on hearing or smell. Regeneration. The vrykolakas regains 10 hit points at the start of its turn if it has at least 1 hit point and isn’t in sunlight or running water. If the vrykolakas takes radiant damage or damage from holy water, this trait doesn’t function at the start of the vrykolakas’s next turn. Shapechanger. The vrykolakas can use its action to polymorph into a wolf, or back into its true form, which is wolf-human hybrid. Its statistics, other than its AC, are the same in each form. Any equipment it is wearing or carrying isn’t transformed. It reverts to its true form if it dies. Spider Climb. The vrykolakas can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check. Stake to the Heart. The vrykolakas is destroyed if a piercing weapon made of wood is driven into its heart while it is incapacitated in its resting place

Actions

• Multiattack (Hybrid Form Only). The vrykolakas makes one attack with its bite and one with its claws.
• Bite (Wolf or Hybrid Form Only). Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 3) piercing damage plus 7 (2d6) necrotic damage. The target’s hit point maximum is reduced by an amount equal to the necrotic damage taken, and the vrykolakas regains hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.
• Claws (Hybrid Form Only). Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 8 (2d4 + 3) slashing damage. Instead of dealing damage, the vrykolakas can grapple the target (escape DC 14).

About

This save savage-looking humanoid is covered in dark fur and has distorted, misshapen limbs.

A vrykolakas is created when a particularly evil werewolf dies. Its hatred of the world is so strong that it reanimates as an undead abomination, continuing its lust for battle and destruction from the grave.