Shapechanger. It polymorphs between a human and a wolf-humanoid canid form, It reverts to its true form at death. Its statistics, other than its AC, are the same in each form. Any equipment it is wearing or carrying isn’t transformed.
Keen Hearing and Smell. The werewolf has advantage on Wisdom (Perception) checks that rely on hearing or smell
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Relentless (once per Short Rest): If it takes 10 damage or less that would reduce it to 0 Hit Points, it is reduced to 1 hit point instead.
Multiattack (Canid Form Only). The werewolf makes two attacks: one with its bite and one with its claws.
Bite (Canid Form Only). Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2) piercing damage.
Claws (Canid Form Only). Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 7 (2d4 + 2) slashing damage.
Weapon (Human Form Only). Melee or Ranged Weapon Attack: +4 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 5 (1d6 + 2) piercing damage, or 6 (1d8 + 2) piercing damage if used with two hands to make a melee attack.
Monondren Fury. Once per long rest. If HP is half or less It can use its reaction to negate the last damage taken.