Carnis
A Carnis is a being created by the Adversary himself. They are masters of deception and prey upon a sense of sympathy in its victims. Often, animals can see through the disguise of a Carnis. As spirits of sort, Carnis do not have their own physical bodies. They can create convincing illusions, even make it so you can see, hear, smell or feel them, but they are most powerful when they have a host body. A Carnis can use any living creature for a host, but they generally avoid Immortalis due to many of them having strong Willpower. However, a young Immortalis would make a fitting host. They can also possess humans and animals.
When their host bodies get destroyed, Carnis just move on to new hosts. They can change bodies at will, as long as the host has no means to expel them.