Curse of Lycanthropy

You have contracted lycanthropy from a bite wound given by one of the cursed. While you suffer from the curse you can use an action to transform into the animal you bear the curse of or the hybrid form or back into your normal form once per long rest. If you ever bite another humanoid they must make a Constitution saving throw with a DC equal to 8 + your proficiency bonus + your Constitution modifier or also become cursed. Regardless of the origins of the curse your transformation lasts for an hour, or all night under a full moon. While in your hybrid form you have resistance to bludgeoning, piercing, and slashing from nonmagical attacks that aren't silvered and regain hit points equal to one Hit Die + your Constitution modifier at the start of your turn. You revert to your true form if you die. You also gain additional features based on the creature that bit you.

Bat

• Your animal form is a large bat. Your statistics, other than your size and speed, are the same in all form. Any equipment you're wearing or carrying isn’t transformed. While transformed in either animal or hybrid form you gain a climbing speed of 30 ft. and a flying speed of 60 ft.
• You gain a Dexterity of 17 if your score isn’t already higher.
• You gain a bite attack that does 1d6 + your Strength or Dexterity modifier, whichever is higher, while transformed.
• You have sunlight sensitivity.
• You gain blindsight of 60 ft. through echolocation, as long as you aren't deafened. 
• You gain advantage on Wisdom (Perception) checks that rely on hearing.
• You must consume at least 1 pint of fresh blood each night, or you weaken and gains one level of exhaustion that no amount of rest alone can remove. Each pint of blood you consume removes one level of exhaustion gained in this fashion.

Bear

• Your animal form is a large bear. Your statistics, other than your size and speed, are the same in this form. Any equipment you're wearing or carrying isn’t transformed. While transformed in either animal or hybrid form you gain a climbing speed of 30 ft.
• You gain a Strength of 19 if your score isn’t already higher and a +1 bonus to AC while in your hybrid form.
• You gain a bite attack that does 1d10 + your Strength modifier piercing damage and a claw attack that deals 1d8 + your Strength modifier slashing damage, while transformed.
• You gain advantage on Wisdom (Perception) checks that rely on smell. 

Boar

• Your animal form is a medium boar. Your statistics, other than your size, are the same in this form. Any equipment you're wearing or carrying isn’t transformed. 
• You gain a Strength of 17 if your score isn’t already higher and a +1 bonus to AC while in your hybrid form.
• You gain a tusk attack that does 1d6 + your Strength modifier piercing damage while transformed. This counts as a bite.
• You can charge. If you move at least 15 ft. straight toward a target and then hit it with your tusks on the same turn, the target takes an extra 2d6 slashing damage. If the target is a creature, it must succeed on a DC (8 + your proficiency bonus + your Strength modifier) Strength saving throw or be knocked prone.

Rat

• Your animal form is a giant rat, which is small. Your statistics, other than your size, are the same in this form. Any equipment you're wearing or carrying isn’t transformed. 
• You gain a Dexterity of 15 if your score isn't already higher.
• You gain a bite attack that does 1d4 + your Strength or Dexterity modifier, whichever is higher, while transformed.
• You gain Darkvision up to 60ft.
• You gain advantage on Wisdom (Perception) checks that rely on smell.

Raven

• Your animal form is a tiny raven. Your statistics, other than your size and speed, are the same in all form. Any equipment you're wearing or carrying isn’t transformed. While transformed in either animal or hybrid form you gain a flying speed of 60 ft. but while in animal form your walking speed is 10 ft.
• You gain a Dexterity of 15 if your score isn't already higher.
• You gain a beak attack that does 1 piercing damage as a raven, or 1d4 + your Strength or Dexterity modifier, whichever is higher, in hybrid form. This counts as a bite.
• You can mimic simple sounds you have heard, such as a person whispering, a baby crying, or an animal chattering. A creature that hears the sounds can tell they are imitations with a successful Wisdom (Insight) check opposed by your Charisma (Deception) check. 

Tiger

• Your animal form is a large tiger. Your statistics, other than your size and speed, are the same in all form. Any equipment you're wearing or carrying isn’t transformed. While transformed in either animal or hybrid form you gain a walking speed of 40 ft.
• You gain a Strength of 17 if your score isn't already higher.
• You gain a bite attack that does 1d10 + your Strength modifier piercing damage and a claw attack that does 1d8 + your Strength modifier slashing damage while transformed. 
• You can pounce. If you move at least 15 ft. straight toward a target and then hit it with your claws on the same turn, it must succeed on a DC (8 + your proficiency bonus + your Strength modifier) Strength saving throw or be knocked prone. If it is knocked prone you may make a bite attack as a bonus action.
• You gain Darkvision up to 60ft.
• You gain advantage on Wisdom (Perception) checks that rely on hearing and smell.

Wolf

• Your animal form is a medium wolf. Your statistics, other than your size and speed, are the same in all form. Any equipment you're wearing or carrying isn’t transformed. While transformed in either animal or hybrid form you gain a walking speed of 40 ft.
• You gain a Strength of 15 if your score isn't already higher and a +1 bonus to your AC while in hybrid form.
• You gain a bite attack that does 1d8 + your Strength modifier piercing damage and a claw attack that does 2d4 + your Strength modifier slashing damage while transformed. 
• You gain advantage on Wisdom (Perception) checks that rely on hearing and smell.