Werewolf

Werewolves are peerless in their savagery. These lupine predators haunt forests and dwell on the outskirts of civilization. They prove to be the most bloodthirsty and insatiable of lycanthropes. The curse of the werewolf is oft believed to be most violent and difficult to resist; most victims flee civilized lands after contracting the affliction, lest they wind up slaughtering their loved ones. Those who embrace the curse revel in their newfound abilities and give into the Beast Within’s hideous demands.
Werewolves gather into packs defined with strict hierarchies. An alpha rules through fear and violence, its regime enforced by a number of betas. Only the strong prosper. Wolves and dire wolves often obey a werewolf’s authority, joining the pack.

Werewolf CR: 3

Medium humanoid (any race, shapechanger), chaotic evil

Armor Class: 12

Hit Points: 58 (9d8+18)

Speed: 40 ft

STR

15 +2

DEX

13 +1

CON

14 +2

INT

10 +0

WIS

11 +0

CHA

10 +0

Skills: Perception +4

Damage Immunities: bludgeoning, piercing, and slashing from nonmagical weapons that aren’t silvered

Senses: darkvision 60 ft., passive perception 14 Keen Hearing and Smell. The werewolf has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Languages: any one language (can't speak in beast form)

Challenge Rating: 3

Proficiency Bonus: +2

Shapechanger. The werewolf can use its action to polymorph into a wolf-humanoid hybrid or into a wolf, or back into its true form, which is humanoid. 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.

Actions

Multiattack (Humanoid or Hybrid Form Only). The werewolf makes two attacks: two with its spear (humanoid form) or one with its bite and one with its claws (hybrid form).
Bite (Wolf or Hybrid Form Only). Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2) piercing damage. If the target is a humanoid, it must succeed on a DC 12 Constitution saving throw or be cursed with werewolf lycanthropy.
Claws (Hybrid Form Only). Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 7 (2d4 + 2) slashing damage.
Spear (Humanoid Form Only). Melee or Ranged Weapon Attack: +4 to hit, reach 5 ft. or range 20/60 ft., one creature. Hit: 5 (1d6 + 2) piercing damage, or 6 (1d8 + 2) piercing damage if used with two hands to make a melee attack.