Hag, Brine 2014

CR 9 fey

Medium fey, lawful evil

Armor Class: 16 (natural armor)
Hit Points: 150 (20d8 +60)
Speed: 15 ft., swim 40 ft.

STR17 (+3)

DEX12 (+1)

CON16 (+3)

INT14 (+2)

WIS16 (+3)

CHA19 (+4)

Saving Throws
Skills: Perception +3
Condition Immunities: charmed, poisoned
Senses: darkvision 120 ft., passive Perception 17
Languages: Aquan, Common, Sylvan
Challenge: 9 (5,000 XP) · Proficiency Bonus +4

Amphibious.

Can breathe air and water.

Magic Resistance.

Advantage: spell/magic effect saves.

Polluted Aura.

Each creature in same water as hag and that starts its turn within 20' of hag: poisoned while within aura and for 1 min after it leaves (DC 16 Con not poisoned). A poisoned creature that starts its turn outside aura can re-save success ends effect on itself.

Skilled Submariner.

Advantage on Wis (Perception) and Wis (Survival) checks to find creatures and objects underwater. Has advantage on Dex (Stealth) checks made to hide while underwater.

Speak with Aquatic Creatures.

Communicate with Beasts and Monstrosities that have a swimming speed as if they shared a language.

Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details