These next three might best be converted all at once...
Bog Moss
CLIMATE/TERRAIN: Tropical and temperate swamps and forests
FREQUENCY: Uncommon
ORGANIZATION: Solitary
ACTIVITY CYCLE: Any
DIET: Omnivore
INTELLIGENCE: Non-
TREASURE: Incidental
ALIGNMENT: Neutral
NO. APPEARING: 1-4
ARMOR CLASS: 9
MOVEMENT: 1
HIT DICE: 2
THACO: 19
NO. OF ATTACKS: 0
DAMAGE/ATTACK: Special
SPECIAL ATTACKS: See below
SPECIAL DEFENSES: See below
MAGIC RESISTANCE: Nil
SIZE: L (10' cube)
MORALE: Average (10)
XP VALUE: 175
Forest Moss
CLIMATE/TERRAIN: Tropical and temperate swamps and forests
FREQUENCY: Rare
ORGANIZATION: Solitary
ACTIVITY CYCLE: Night
DIET: Omnivore
INTELLIGENCE: Animal (1)
TREASURE: Incidental
ALIGNMENT: Neutral Evil
NO. APPEARING: 1-6
ARMOR CLASS: 7
MOVEMENT: 6
HIT DICE: 5
THACO: 15
NO. OF ATTACKS: 0
DAMAGE/ATTACK: Special
SPECIAL ATTACKS: See below
SPECIAL DEFENSES: See below
MAGIC RESISTANCE: Nil
SIZE: L (10' cube)
MORALE: Steady (11)
XP VALUE: 975
Swamp Moss
CLIMATE/TERRAIN: Tropical and temperate swamps and forests
FREQUENCY: Very Rare
ORGANIZATION: Solitary
ACTIVITY CYCLE: Any
DIET: Omnivore
INTELLIGENCE: Animal (1)
TREASURE: Incidental
ALIGNMENT: Neutral Evil
NO. APPEARING: 1-4
ARMOR CLASS: 6
MOVEMENT: 3
HIT DICE: 8
THACO: 13
NO. OF ATTACKS: 0
DAMAGE/ATTACK: Special
SPECIAL ATTACKS: See below
SPECIAL DEFENSES: See below
MAGIC RESISTANCE: Nil
SIZE: L (10' cube)
MORALE: Steady (11)
XP VALUE: 2,000
Bog moss appears as a rich green mass of vegetable matter, usually found in approximately 10' cubes. The creature nestles in bowl-like earth and rock formations, making itself appear as a normal patch of moss upon the ground.
Combat: Unwary creatures who trod upon the moss fall into the mass of it, where they will be devoured. The bog moss' digestive juices inflict 10 points of damage per round until the victim dies and is ingested. The bog moss' body is more unstable than quicksand; creatures which fall into its body cannot gain purchase to climb out. It is difficult to rescue a trapped creature, as the bog moss' digestive juices also consume organic matter, including ropes and wooden poles. Only chains, metal cables, and magic might be employed successfully.
Habitat/Society: A bog moss prefers to locate where rich soil is within easy reach. Every spring, each bog moss produces about a dozen spores which fly off with the wind. Those landing on suitable soil quickly take root and begin to grow. As the bog moss grows beyond a 2' cube, it no longer needs roots, and they dissolve. A bog moss does not collect treasure. However, sometimes coins, armor and weapons can be found beneath a bog moss -- remnants of victims.
Ecology: Bog mosses eat dirt, other plants, and any creatures which fall into its mass. When meals become sparse, the plant exists through photosynthesis. The moss is especially fond of ferns.
Bog moss has no natural enemies. However, mages have been known to seek the moss' spores for use in magical elixirs and as spell components.
Forest Moss: Forest moss is similar to bog moss. However, it is more mobile and actively seeks out creatures for food. Forest moss is sensitive to light and is more active in the evenings. It is only found in wooded areas, usually beneath large trees where there is plenty of shade.
Swamp Moss: This more powerful form of bog moss requires a wet environment. Because so much of its body is water, it takes only half-damage from fire-based spells. Cold-based spells put the creature in a form of suspended animation.
Originally appeared in Polyhedron Magazine #67 (1992).