Lycanthrope

Lycanthropes use normal commoner statistics. At a full moon,  it turns into an animal. It also gains the following ability:

• Silver bullet. When not in their human form, lycanthropes cannot be harmed by weapons or attacks which are not made of silver or which do not do holy damage.

Lycanthropes use the stat blocks of any animal. The most common lycanthropes are werewolves and wererats, but all animal types are eligible.

When in animal form, the werecreature uses the animal's statistics, including its semi-sentient nature.