||Any subterranean or dark areas
||Dark, moist areas
|No. of Attacks:
||+3 weapon needed to hit;
||Nil (see below)
||T (6" long)
||T (6" long)
The term "intellect devourer" refers only to this creature's adult form; its
larva is an ustilagor. Both resemble a brain on four legs. The body of the
intellect devourer has a crusty protective covering, and its legs are bestial,
jointed, and clawed. The ustilagor's body is soft and moist and usually covered with
a gray fungus; it has a 3-foot-long tendril at the front, and its legs are
spindly and coral-like. Though both forms are about brain-sized, the adult can use
psionics to alter its size.
The ustilagor attacks by striking with its flexible tendril. The tendril
secretes an alkaline substance which causes 1d4+1 damage on a successful hit, as
well as another 1d4+1 damage the following round, unless the victim makes a
successful saving throw vs. poison. The creature is quite agile, and can jump and
The ustilagor can also attack psionically, first making contact with a
victim's mind. It uses aversion to give a victim an aversion to fungus or to a certain
area; id insinuation to effectively paralyze the victim; or telempathic
projection to increase an opponent's dislike or distrust of companions.
Despite its psionic prowess, the ustilagor cannot be attacked mentally
(magically or psionically) except by psionic blast. Its fungal growth interferes with
and prevents mental attacks, protects the ustilagor from drying out, prevents
cerebral parasites from attacking, and makes the creature immune to fungal
attacks and any power that reads or affects an aura.
The adult form also prefers to attack with psionics, though its three-taloned
paws can all be used in the same round, as the creature jumps on an opponent
Aside from its regular psionic powers (see below), the adult intellect
devourer has specialized forms of three psionic powers; these are constantly in effect
and cost no PSPs, but they do count as psionic activity for detection
purposes. Through a special form of energy containment, the intellect devourer is
immune to damage from normal and magical fires, and takes only one hit point per die
of electrical damage; a form of split personality is always in effect,
allowing the creature to attack with psionics and claws in the same round; and it has
psionic sense with a 60 foot range.
The intellect devourer is immune to weapons with less than a +3 enchantment,
and takes only 1 point of damage per hit from those weapons which can harm them.
A death spell
has only a 25% chance of success, but power word: kill
is effective. A protection from evil
keeps the intellect devourer at bay, and bright light (including that caused
by fire) drives it away.
An intellect devourer hunts and stalks psionic creatures. After killing a
psionic victim, it sometimes uses reduction to enter the body, devour the brain,
and occupy its place. It reads the victim's mind as it devours it, then animates
the body from within, using it to find other minds to attack and devour.
Intellect devourers have the following psionic powers; ustilagor have only
those powers marked by asterisks:
Psychometabolism - Sciences:
ectoplasmic form*. Devotions:
chameleon power, expansion, reduction.
Psychoportation - Devotions:
Telepathy - Sciences:
domination, mindlink. Devotions:
aversion*, contact*, ego
whip, ESP, id insinuation*, telempathic projection*.
Intellect devourers dwell beneath the ground or in dismal wilderness areas.
Their reproductive method is unknown. The intellect devourer rarely protects its
young, and may even devour them. Ustilagor develop a symbiotic relationship
with a bizarre fungus which feeds on residual thought emanations from the
ustilagor's victims. An ustilagor becomes an adult by consuming the brain of a psionic
Mind flayers raise intellect devourers, treating the ustilagor as culinary
delights, and using adults as watch dogs. Both forms of the creature can be used
as components in items and potions related to ESP and mind control.