Tome of the Undying

Bound in morbid leather and inscribed with
ominous runes, this grimoire allows the
wielder to use an action to summon an
undead army based on the wielder's level
(10+). If the wielder's Wisdom score is
too low (below 12), the tome will take
control of the user's body at night and
compel them to carry out malevolent deeds
while it's in their possession. {b}