FREQUENCY: Very rare
FREQUENCY: Very rare ([Dungeon Level III])
 

NO. APPEARING: 1
ARMOR CLASS: 8
MOVE: 1"
HIT DICE: 2
% IN LAIR: 100%
TREASURE TYPE: Nil
NO. OF ATTACKS: Nil
DAMAGE/ATTACK: Nil
SPECIAL ATTACKS: [SB]
SPECIAL DEFENSES: [SB]
MAGIC RESISTANCE: Standard
INTELLIGENCE: Very (within the limitations of its existence)
ALIGNMENT: Neutral
SIZE: S (2" - 3" in diameter)
PSIONIC ABILITY: Nil
    Attack/Defense Modes: Nil
LEVEL/X.P. VALUE: III | 65 + 2

This curious freak mutation takes the form of a globule of yellow
jelly about 2 1/2" in diameter. To obtain sustenance it must drain
energy (which it can do remotely in a fashion whose means defy
investigation) from a carnivorous creature - any monster which rends
flesh except those which dwell on planes other than the Prime
Material and those of the undead class - at the same time as the
monster is itself eating. This peculiar requirement is the reason for the
creature's unique behaviour.

It selects as its lair an unoccupied cave and sticks to the ceiling where
it is virtually impossible to detect. When a monster - hopefully a
powerful monster - ventures in, the jelly will use one of i t s magical
powers - charm monster - to persuade the beast telepathically to
remain in the cave and attack any creature or person entering. (The
monster must be one which would normally, or at least occasionally,
feed on flesh, otherwise the jelly will let it pass undisturbed). The
jelly then uses i t s other magical power - an advanced form of illusion
- to create two illusions. The first illusion makes the charmed
monster appear to be a much weaker beast, the second creates illusory
treasure in the cave. Those observing the illusions will fail to recognise
them as such unless thay save against magic at a penalty of -7.

If the intruder is killed by the creature the jelly has charmed, the jelly
will drain power through the creature as it eats. If the charmed
creature loses the battle, the jelly will attempt to charm the victor
and persuade it to replace the former occupant.
 

by Roger Musson