Wondrous item, very rare (requires attunement)
A fur cloak made from werewolf hide, its toothy maw hooding the wearer’s face.
Primal Body. While wearing this item you gain the following properties:
You have advantage on Wisdom (perception or survival) checks that rely on sight and smell.
Your unarmed strikes deal 1d6 slashing damage instead of their normal damage, and you can make unarmed strikes using a bite attack.
You have advantage on melee attack rolls against a creature if at least one of your allies is within 5 feet of the creature and the ally is not incapacitated.
Lunar Surge. While in moonlight, you can use an action to imbue yourself with supranatural speed and vigor. You gain temporary hit points equal to three times your character level. While you have these temporary hit points, your Strength and Dexterity scores and maximum increase by 3, and you are resistant to bludgeoning, piercing, and slashing damage by non-silvered weapons. If you already have resistance to such damage types, you instead reduce any such damage by your Constitution modifier while you have these temporary hit points (minimum 1).
Once you have used this property, you cannot do so again until you finish a long rest.
Curse. This item is cursed and using its Lunar Surge property extends the curse to you. You remain cursed this way until you die or until it is removed by magic of 7th level or higher. Until the curse is broken, you are unwilling to remove the cloak at all times. You gain the following traits:
Your form becomes fully bestial, making you nearly indiscernible from a werewolf.
You are vulnerable to damage from silvered weapons.
After dusk during a full moon, you must make a DC 16 Wisdom saving throw each hour until dawn. On a failure you turn into a werewolf under the DM’s control. The werewolf can use any property granted by this item. You remain transformed this way until dawn or until you are knocked unconscious.
In my humble opinion, I believe those struck with the terrible symptoms of Lycanthropy are beings to be pitied, not feared. Certainly they aren’t to blame for their unfortunate circumstances, and I’m sure they would happily trade ANYTHING for even a chance at ridding themselves of their malady. When I encountered a pack of such poor souls, I took it upon myself to ease their burden.
What’s that? Cure them? Oh heavens no, I was in a rush and had no time for such charity! I simply killed all of them; it was much more efficient. But it seemed such a shame to leave their lovely pelts behind, they do fetch a pretty penny after all!