Gray Mold
Climate/Terrain: Subterranean
Frequency: Rare
Organization: Patch
Activity Cycle: Any
Diet: Carnivorous
Intelligence: Non- (0)
Treasure: Nil
Alignment: Neutral
No. Appearing: 1 patch
Armor Class: 9
Movement: 0
Hit Dice: n/a
THAC0: n/a
No. of Attacks: 1
Damage/Attack: 1d6
Special Attacks: Spores
Special Defenses: See below
Magic Resistance: 35%
Size: S to L
Morale: n/a
XP Value: 65
These deadly molds are spore-producing fungi that grow in decaying organic materials. Like all molds, these have a fuzzy, harmless appearance. However, they can be deadly if disturbed, and they are hard to get rid of.
A typical patch of mold covers from 30 to 60 square feet. Patches can be found on walls, ceilings, and floors, and are eaten by a variety of underground dwellers. Molds wither in sunlight or dry conditions, and magics such as sunburst or sunray will kill a patch immediately.
Gray Mold
This mold, which grows primarily on floors, has a fuzzy light gray to dark gray color. Often overlooked in subterranean caverns, the mold releases its spores when it is stepped on or attacked. It can create a cloud of spores every 6 rounds.
A cloud of gray spores is 30 feet deep by 15 feet wide and 15 feet high. Living creatures caught within the cloud suffer 1d6 points of damage and must make a saving throw vs. poison. Those who do not save have inhaled 1d6 spores – each causes 1 point of damage per round until either the creature is dead or a cure disease spell kills the spores. Those killed by gray mold spores become part of the mold, a man-sized creature increasing the size of a patch by 10 square feet. The spores do not harm non-living matter.
Gray mold is immune to weapons and to fire-based attacks. In addition, it has a natural magic resistance. Cold-based spells that pierce its resistance make the mold dormant for 1d8 turns, while ice storm, wall of ice, and similar spells (of 4th level or higher) kill the mold outright.
Originally appeared in Ruins of Undermountain II: The Deep Levels (1994). This is the Monstrous Compendium Annual Volume Two version.