Possession requires the demon to have the Possession
Charm. If successful, the demon
has two options: it can try to sneak into the host and subtly
influence her, or it can try for an all-out takeover. Some mortals freely open themselves up to possession, such as
through the use of Ouija Boards.
If the demon attempts subtle possession, the
host does not know she is being manipulated and will
believe she is acting in a particular manner of her own free
will.
If the demon attempts an all-out takeover of the host, the host’s consciousness becomes
submerged. Demons have full access to the memories of their host
in addition to all their own faculties. They usually use their
hosts to perform actions for either demonic benefit or for
the sheer joy of destruction.
A mage may attempt to exorcise a possessing demon if
she has a Spirit rating of 3 or greater or someone with True Faith.
(Book of Madness 103)
