Insightful. The weeping wolf has advantage on Wisdom (Perception) checks that rely on sight and it can't be surprised.
Soul Drain. When the weeping wolf starts its turn, each creature that has 0 hit point and is still alive within 15 feet of the weeping wolf must succeed on a DC 15 Wisdom saving throw or die, its soul being devoured. The weeping wolf regains a number of hit points equal to 5 times the level (or challenge rating) of any creature killed this way. On a successful saving throw, a creature is immune to the Soul Drain of all weeping wolves for the next 24 hours.
Multiattack. The weeping wolf uses Living Nightmare if it can. It then makes three melee attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage plus 4 (1d8) necrotic damage.
Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) slashing damage plus 4 (1d8) necrotic damage.
Living Nightmare (Recharge 6). The weeping wolf's eyes focus their gazes on any number of creatures within 30 feet of the weeping wolf, making their soul shiver. Each target must succeed on a DC 15 Wisdom saving throw, or be paralyzed in fear for 1 minute. An affected target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. A target that succeeds on the saving throw is immune to this weeping wolf's Living Nightmare for the next 24 hours.
Description
No one knows when or where weeping wolves appeared for the first time. They feed on souls, growing bigger and stronger each time they drain a corpse from its spirit. It is said that their gaze can pervade your mind, leaving you defenseless while they tear your body and soul apart.
Unholy Wanderer. Weeping wolves roam the lands in search for souls to devour, leaving only despair and destruction in their path.
Soul Eater. A weeping wolf doesn't require air, food, drink or sleep. They only feed on souls, although they don't require to consume any to keep on living.
Spiritual Prison. All souls devoured by the weeping wolf are imprisoned within it. They cannot leave the wolf except by very powerful magical means such as the wish spell. Therefore, a creature whose soul has been devoured cannot be resurrected using revivify, resurrection or raise dead. A soul imprisoned in the weeping wolf for 7 days is consumed and destroyed utterly, whereupon nothing short of divine intervention can restore it to life.
Freeing the souls
If the weeping wolf dies, all souls which have been imprisoned for less than 7 days are released and may attempt to automatically return to their bodies (if they still have one) by succeeding on a DC 15 Wisdom saving throw. The DC increases by one for each day the soul spent inside the weeping wolf.
(All credit for this monster goes to Sandara, the rightful owner of it).
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