Larval Aboleth Swarm

Family: Aboleth

Large swarm of tiny aberrations, neutral evil

Armor Class 13 (natural)
Hit Points 105 (14d10+28)
Speed swim 30 ft.

STR	DEX	CON	INT	WIS	CHA
2 (-4)	14 (+2)	15 (+2)	9 (-1)	14 (+2)	15 (-4)

Damage Resistances bludgeoning, piercing, slashing
Condition Immunities charmed, frightened, paralyzed, petrified, prone, restrained, stunned
Senses darkvision 60 ft., Passive Perception 12
Languages Aquan, Deep Speech, Undercommon
Challenge 6 (2,300 XP)

SPECIAL Traits

• Amphibious. The larval aboleth swarm can breathe both air and water.
• Alter appearance. A swarm of larval aboleth may generate an illusion around themselves to appear as a school of harmless fish or similar animals of the same size. Observation or physical interaction with the swarm allows a creature to attempt a DC 15 Intelligence (Investigation) check to discern the illusion for what it is. If a creature discerns the illusion for what it is, the illusion remains, but becomes faint for the creature.
• Mucous Cloud. While underwater, the swarm is surrounded by transformative mucus. A creature within the swarm’s space must make a DC 15 Constitution saving throw. On a failure, the creature is diseased for 1d4 hours. The diseased creature can breathe only underwater.
• Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny insect. The swarm can’t regain hit points or gain temporary hit points.

ACTIONS

• Bites. Melee Weapon Attack: +6 to hit, reach 0 ft., all targets in the swarm’s space. Hit: 14 (4d6) piercing damage, or 7 (2d6) piercing damage if the swarm has half of its hit points or fewer.

ABOUT

Larval aboleth swarms are found where ever large numbers of aboleth dwell. Once the aboleth spawn, they guard their larva haphazardly, allowing survival of the fittest to ensure that only the most powerful spawn grow to adulthood.

A swarm of larval aboleth is always hungry, and will attack any creature that is not an aboleth or known servant. They cloak themselves in the image of harmless fish, and are generally ignored by both predator and prey until it’s too late.

A swarm of larval aboleth will remain together for several years before suddenly turning on each other with a violence that turns the water to ichor-stained froth. The two or three survivors of the massacre haul themselves out of the water to join the greater aboleth society. They only begin to exist as thinking beings to adult aboleth at this point.