A-to-Z Challenge, K: Kala (New Oe/BX/1E Monster)

Today's A-to-Z monster is a nasty one... literally. It's a sort of "disease elemental," if you will. This one's definitely got more of a 1e bent rather than BX (IMO.)

Kala

DESCRIPTION A kala (plural = kalau) is a being of pure disease and decay originating from the negative material plane. They are normally found in the prime material plane in areas where conditions prevail for disease to flourish (e.g., the murky waters of tropical swamps, dank sludge-filled caves, etc.) Kalau have a natural hatred of humans, but particularly despise any humanoid with a lifespan greater than 100 years (e.g. elves and dwarves.) As such, they seek to spread disease to these communities. In combat, they will attack opponents in order from those with the greatest standard life expectancy to the least, and a kala receives a +1 bonus to morale for each member of the defending party with a life expectancy over 100 years (maximum morale of 12.) The touch of a kala carries a combination of harmful and corruptive effects, depending on the hit dice of the creature being attacked. First, all creatures 3 hit dice and under are susceptible to a poison that (unless a successful saving throw vs. vs. poison is made) kills in 3-12 turns unless cured. Second, all creatures 6 hit dice and under are susceptible to a paralytic agent that (unless a successful saving throw vs. paralysis is made) will put creatures with 3 hit dice or less into a coma-like state, or slow creatures with 4-6 hit dice to half their normal movement, for 3-12 turns (each.) Third, all creatures with 9 hit dice or less are susceptible to a rotting disease that (unless a successful saving throw vs. magic is made) will do 1 hit point of damage during each successive melee round until cured (only curable by magic through use of a cure disease spell.) Finally, all creatures (regardless of hit dice) are subject to boils and sores (no saving throw) upon a successful "to hit" roll by a kala. There is a 50% chance that these boils will appear on a creature's lower extremities (halving both movement and encumbrance) and a 50% chance they will appear on the creature's upper extremities (giving them a -1 "to hit" penalty). The duration of these boils is 12 turns minus the hit dice of the affected creature, with a minimum duration of 1 turn. Kalau are immune to the effects of poison, paralysis and disease. Flame-based attacks do only half damage to a kala, and cold only slows them (to half their normal movement.) Additionally, a +1 or better magical weapon is required to hit a kala.

Oe/1E STATS FREQUENCY: Very Rare NO. APPEARING: 1-4 ARMOR CLASS: 4 MOVE: 12" HIT DICE: 6 % IN LAIR: Nil TREASURE TYPE: Nil NO. OF ATTACKS: 1 touch DAMAGE/ATTACK: Special SPECIAL ATTACKS: See below SPECIAL DEFENSES: See below MAGIC RESISTANCE: See below INTELLIGENCE: Average ALIGNMENT: Chaotic Evil SIZE: M PSIONIC ABILITY: Nil Attack/Defense Modes: Nil BX STATS ARMOR CLASS: 4 HIT DICE: 6 MOVE: 120' ATTACKS: 1 touch DAMAGE: Disease (see below) NO. APPEARING: 1-4 SAVE AS: Fighter: 6 MORALE: 9 (or see below) TREASURE TYPE: Nil ALIGNMENT: Chaotic