Medium Elemental, chaotic evil
Armor Class 15 (natural armor)
Hit Points 78 (12d8+24)
Speed fly +30, swim +30, walk +30
Challenge 4
Damage Resistances lightning, thunder; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Condition Immunities exhaustion, paralyzed, petrified, poisoned, unconscious
Senses darkvision 60 ft., passive Perception 11
Languages Common, Primordial
Innate Spellcasting. The storm maiden's innate spellcasting ability is Charisma (spell save DC 13, +5 to hit with spell attacks). She can innately cast the following spells, requiring no material components: At will: create or destroy water, ray of frost, misty step, thunderwave 1/day each: sleet storm, wind wall
Multiattack. The storm maiden makes two thunderous slam attacks.
Thunderous Slam. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage plus 7 (2d6) thunder damage.
Throw Lightning. Ranged Spell Attack: +5 to hit, range 120 ft., one target. Hit: 14 (4d6) lightning damage, and the target must succeed on a DC 13 Constitution saving throw or be incapacitated until the end of its next turn.
Source: Tome of Beasts 2 · OGL/Open