Aboleth

Aboleth, CR 10

Large aberration, lawful evil

Armor Class 17

Hit Points 135 ( 18d10+36 )

Spell Points

Speed 10ft Swim: 40ft

STR

19
+5

DEX

8
-1

CON

15
+2

INT

18
+4

WIS

15
+2

CHA

18
+4

Proficiency Bonus 4

Saving Throws Con 1d20+6 , Int 1d20+8 , Wis 1d20+6

Skills History 1d20+12 , Perception 1d20+10

Senses Darkvision 120 ft., Passive Perception 18

Languages Deep Speech, telepathy 120 ft.

Special Abilites

Amphibious. The aboleth can breathe air and water.
Mucous Cloud. While underwater, the aboleth is surrounded by transformative mucus. A creature that touches the aboleth or that hits it with a Melee Attack while within 5 feet of it must make a DC 14 Constitution saving throw. On a failure, the creature is Diseased for 1d4 hours. The diseased creature can breathe only underwater.
Probing Telepathy. If a creature communicates telepathically with the aboleth, the aboleth learns the creature's greatest desires if the aboleth can see the creature.

Actions

Multiattack. The aboleth makes three tentacle attacks.
Tentacle. Melee Attack: 1d20+9 to hit, reach 10 ft., one target. Hit: 12 ( 2d6+5 ) Bludgeoning Damage. If the target is a creature, it must succeed on a DC 14 Constitution saving throw or become Diseased. The disease has no effect for 1 minute and can be removed by any magic that cures disease. After 1 minute, the diseased creature's skin becomes translucent and slimy, the creature can't regain Hit Points unless it is underwater, and the disease can be removed only by Heal or another disease-­curing spell of 6th level or higher. When the creature is outside a body of water, it takes 6 ( 1d12 ) Acid Damage every 10 minutes unless moisture is applied to the skin before 10 minutes have passed.
Tail. Melee Attack: 1d20+9 to hit, reach 10 ft. one target. Hit: 15 ( 3d6+5 ) Bludgeoning Damage.
Enslave (3/Day). The aboleth targets one creature it can see within 30 feet of it. The target must succeed on a DC 14 Wisdom saving throw or be magically Charmed by the aboleth until the aboleth dies or until it is on a different plane of existence from the target. The charmed target is under the aboleth's control and can't take Reactions, and the aboleth and the target can communicate telepathically with each other over any distance.
Whenever the Charmed target takes Damage, the target can repeat the saving throw. On a success, the effect ends. No more than once every 24 hours, the target can also repeat the saving throw when it is at least 1 mile away from the aboleth.

Legendary Actions

The aboleth can take 3 epic actions, choosing from the options below. Only one epic action option can be used at a time and only at the end of another creature's Turn. The aboleth regains spent epic actions at the start of its turn.
Detect. The aboleth makes a Wisdom (Perception) check.
Tail Swipe. The aboleth makes one tail attack.
Psychic Drain (Costs 2 Actions). One creature Charmed by the aboleth takes 10 ( 3d6 ) Psychic Damage, and the aboleth regains Hit Points equal to the damage the creature takes.

Genetic Descendants

• Chuul