AbolethCR 10 · Large Aberration · Stat Block & Encounter Builder

Large aberration, Challenge 10. AC 17, 135 hit points.

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Armour Class

Hit Points

135

Speed

10 ft.

Challenge

10 · 5,900 XP

Alignment

Lawful Evil

The card

Stat Block

Large Aberration · Lawful Evil

Aboleth

135

18d10 + 36 · 10 ft., swim 40 ft. · AC from natural armor

Darkvision 120 ft., passive Perception 20

Languages: Deep Speech, telepathy 120 ft.

STR	DEX	CON	INT	WIS	CHA
21 (+5)	9 (-1)	15 (+2)	18 (+4)	15 (+2)	18 (+4)

Traits

AmphibiousThe aboleth can breathe air and water.

Mucous CloudWhile 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 ft. 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 TelepathyIf a creature communicates telepathically with the aboleth, the aboleth learns the creature's greatest desires if the aboleth can see the creature.

Actions

MultiattackThe aboleth makes three tentacle attacks.

TentacleMelee Weapon Attack: +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.

TailMelee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 15 (3d6 + 5) bludgeoning damage.

EnslaveThe aboleth targets one creature it can see within 30 ft. 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.

How to actually run it

Tactics

The stat block tells you what it can do. This tells you what to do with it.

1Multiattack: The aboleth makes three tentacle attacks.

2It is a legendary creature with 3 legendary actions between turns; fight it in its lair and it is far more dangerous than the stat block alone.

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Encounter Difficulty

Encounter Builder

How bad is this fight?

Real DMG maths — XP thresholds by level, and the group multiplier that makes crowds so much worse than the raw total suggests.

Aboleths4Party size4Party level3

Could kill someone — and at high enough numbers, the whole party.

Difficulty

Deadly

47,200 adj. XP · ×2

deadly at 1,600

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Counsel

Aboleth, Answered

What is Aboleth's challenge rating in D&D 5e?

Aboleth is Challenge 10, worth 5,900 XP. Encounter maths multiplies XP by the number of monsters, so a group is deadlier than the raw total — use the calculator on this page.

What are Aboleth's stats?

AC 17 (natural armor), 135 hit points (18d10 + 36), speed 10 ft., swim 40 ft.. Ability scores: STR 21, DEX 9, CON 15, INT 18, WIS 15, CHA 18.

Where does Aboleth fit in an encounter?

As a aberration of Challenge 10, it suits a party whose level is in the same range. Adjust party size and level in the builder above to see the difficulty shift live.

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