Medium fiend (yugoloth), Neutral Evil
| Armor Class | 15 |
|---|---|
| Hit Points | 135 (18d8 + 54) |
| Speed | 20 ft., swim 40 ft. |
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 12 (+1) | 21 (+5) | 16 (+3) | 19 (+4) | 10 (+0) | 14 (+2) |
| Saving Throws | — |
|---|---|
| Skills | Insight +4, Perception +4 |
| Damage Vulnerabilities | fire |
| Damage Resistances | cold; lightning; bludgeoning, piercing, slashing from nonmagical attacks |
| Damage Immunities | acid; poison |
| Condition Immunities | poisoned |
| Senses | blindsight 60 ft., darkvision 60 ft., passive Perception 14 |
| Languages | Abyssal, Infernal, telepathy 60 ft. |
| Challenge | 9 |
The hydroloth can breathe air and water.
The hydroloth has advantage on saving throws against spells and other magical effects.
The hydroloth is immune to the waters of the River Styx, as well as any effect that would steal or modify its memories or detect or read its thoughts.
While submerged in liquid, the hydroloth has advantage on attack rolls.
The hydroloth makes two Bite or Claw attacks. It can replace one attack with a use of Spellcasting.
Melee Attack Roll: +9 to hit, reach 5 ft., one target. Hit: 16 (2d10 + 5) force damage plus 9 (2d10) psychic damage.
Melee Attack Roll: +9 to hit, reach 5 ft., one target. Hit: 14 (2d8 + 5) force damage plus 9 (2d10) psychic damage.
The hydroloth targets one creature it can see within 60 feet of it. The target takes 14 (4d6) psychic damage, and it must make a DC 16 Intelligence saving throw. On a successful save, the target becomes immune to this hydroloth's Steal Memory for 24 hours. On a failed save, the target loses all proficiencies; it can't cast spells; it can't understand language; and if its Intelligence and Charisma scores are higher than 5, they become 5. Each time the target finishes a long rest, it can repeat the saving throw, ending the effect on itself on a success. A greater restoration or remove curse spell cast on the target ends this effect early.
The hydroloth teleports, along with any equipment it is wearing or carrying, up to 60 feet to an unoccupied space it can see.
The hydroloth casts one of the following spells, requiring no material components and using Intelligence as the spellcasting ability (spell save DC 16):
At will: darkness, detect magic, dispel magic, invisibility (self only)
3 each/day: control water, crown of madness, fear, suggestion
Medium fiend (yugoloth), Neutral Evil
| Armor Class | 15 |
|---|---|
| Hit Points | 135 (18d8 + 54) |
| Speed | 20 ft., swim 40 ft. |
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 12 (+1) | 21 (+5) | 16 (+3) | 19 (+4) | 10 (+0) | 14 (+2) |
| Saving Throws | — |
|---|---|
| Skills | Insight +4, Perception +4 |
| Damage Vulnerabilities | fire |
| Damage Resistances | cold; lightning; bludgeoning, piercing, slashing from nonmagical attacks |
| Damage Immunities | acid; poison |
| Condition Immunities | poisoned |
| Senses | blindsight 60 ft., darkvision 60 ft., passive Perception 14 |
| Languages | Abyssal, Infernal, telepathy 60 ft. |
| Challenge | 9 |
The hydroloth can breathe air and water.
The hydroloth has advantage on saving throws against spells and other magical effects.
The hydroloth's weapon attacks are magical.
The hydroloth is immune to the waters of the River Styx as well as any effect that would steal or modify its memories or detect or read its thoughts.
While submerged in liquid, the hydroloth has advantage on attack rolls.
The hydroloth makes two melee attacks. In place of one of these attacks, it can cast one spell that takes 1 action to cast.
Melee Attack Roll: +9 to hit, reach 5 ft., one target. Hit: 14 (2d8 + 5) slashing damage.
Melee Attack Roll: +9 to hit, reach 5 ft., one target. Hit: 16 (2d10 + 5) piercing damage.
The hydroloth targets one creature it can see within 60 feet of it. The target takes 4d6 psychic damage, and it must make a DC 16 Intelligence saving throw. On a successful save, the target becomes immune to this hydroloth's Steal Memory for 24 hours. On a failed save, the target loses all proficiencies, it can't cast spells, it can't understand language, and if its Intelligence and Charisma scores are higher than 5, they become 5. Each time the target finishes a long rest, it can repeat the saving throw, ending the effect on itself on a success. A greater restoration or remove curse spell cast on the target ends this effect early.
The hydroloth magically teleports, along with any equipment it is wearing or carrying, up to 60 feet to an unoccupied space it can see.
The hydroloth's innate spellcasting ability is Intelligence (spell save DC 16). It can innately cast the following spells, requiring no material components:
At will: darkness, detect magic, dispel magic, invisibility (self only), water walk
3 each/day: control water, crown of madness, fear, phantasmal killer, suggestion