Lucy the Fathomless

CR 8 controller

medium humanoid (human), chaotic evil

Armor Class: 15 (Studded Leather)
Hit Points: 87 (9d8+47)
Speed: 30ft, swim 40ft.
STR
10 (+0)
DEX
14 (+2)
CON
16 (+3)
INT
10 (+0)
WIS
14 (+2)
CHA
20 (+5)
Skills: Perception +6 Arcana +4 History +4 Deception +9
Damage Resistances: Cold
Senses: Darkvision 60ft, Passive Perception 16
Languages: Common, Dwarvish
Spellcasting: Lucy is a 9th-level spellcaster. Their spellcasting ability is Charisma (spell save DC 17 , +9 to hit with spell attacks). They know the following spells:

Sea Legs: Lucy has advantage on saving throws against becoming Prone.

Oceanic Adaptation: Lucy can breathe underwater.

Floating Rune: Nauthiz (1/long rest): The first time Lucy reaches 0 hit points, she instantly regains 10 (3d6) hit points.

Actions

Multi-attack: Lucy can use two Fathomless Blast attacks.

Fathomless Blast: Ranged spell attack: +9 to hit, range 120 ft, one target. Hit: 10 (1d10+5) Cold damage.