Master of Possession

Psyker, Ward—Pay 3 life.
— Offering of Souls—Psychic Power{line}
{b}{b}{b}{b}{b}{t}{line} Sacrifice a creature. Put a
Daemon counter on target creature, and you gain control of it. It is a Daemon in addition to its
other creature types. If it would die from a
"Destroy target Daemon" effect, remove the
Daemon counter and return it to its owner's
control. Otherwise it dies normally.