New Monsters from CSotIOL box 4.
Blue Yetch
Frequency: Very Rare
No. Appearing: One
% in Lair: 100
Treasure Type: Q
HTK: Special,
AC: 6
MV: l",
AT:0
DM: See following
THACO: N/A,
AL: Neutral
INT: Non-,
SZ: M-L
Spells: None
Specials: Only affected by fire damage — must sustain 50 HTK of damage or more before destruction; for others, see following.
Magic Resistence: See following
Psionic Ability: Nil
Blue Yetch is created as an off-shoot of ghost and Poltergeist materializations. A cousin to the fungus family, Yetch forms when ectoplasmic residue from a materialization comes into contact with dead or living organic matter, leading to fungal regeneration.
Once the colony reaches Man-size, the Blue Yetch ceases its organic consumption, finding and creating nourishment through its own internal systems. When Yetch which has reached this point encounters living organic material, it absorbs living energy in the amount of 2D6 HTK and is then considered "charged"' for a period of one turn. Contact with living organic matter during this "charged" time releases the previously absorbed HTK energy in a healing process, replenishing lost HTK to the contacted material.
If the Blue Yetch releases its previously absorbed energy or if it does not come into contact with another living organic material within one turn, it will dissipate the energy within its own form and then be considered "uncharged," again absorbing 2D6 HTK of energy at the next organic contact.
Once reaching the colony stage, Yetch forms primarily on walls, preferring to spread over a ceiling rather than a floor should it reach greater than Man-size proportions. Yetch is a vibrant blue in color and appears to glow from within, becoming darker in hue and luminance as it increases its surface area. Any Yetch removed from the colony will die and evaporate, forming a purposeless pale blue dust, in 1D4 rounds.
Yet, in several instances, Blue Yetch has been intentionally removed from its colony and successfully transplanted to environments suitable for Yetch regeneration. If properly acclimated, Yetch can serve as an excellent biodegenerative compound which aids in the elimination of the vast waste inevitably created in large cities. Development must be closely monitored, however, as the fungal colony can often reproduce so rapidly that entire populations are forced to flee the very communities the Yetch was requisitioned to cleanse.