Large Elemental, Unaligned
Armor Class 17 (natural armor)
Hit Points 138 (12d12 + 5)
Speed 30 ft., Climb 30 ft.
STR
24 (+7)
DEX
11 (+0)
CON
20 (+5)
INT
19 (+4)
WIS
15 (+2)
CHA
17 (+3)
Saving Throws STR +11, DEX +4, WIS +6
Skills Stealth +9
Damage Resistances Bludgeoning, Piercing, and Slashing from Nonmagical Attacks that aren't Adamantine
Damage Immunities Fire
Condition Immunities Frightened, Poisoned
Senses Blindsight 10, Darkvision 60 ft., Passive Perception 15
Languages Ignan, Telepathy One creature within 60 ft. --
Challenge 12 (8,400 XP)
Proficiency Bonus +4
Traits

Elemental Shift. As a bonus action, Burnadetta magically shifts from the Material Plane to the Elemental Plane of Fire, or vice versa.

Spider Climb. The spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Web Walker. The spider ignores movement restrictions caused by webbing.

Flame Aura. Any creature that starts its turn within 5 feet of Burnadetta takes 5 (2d4) fire damage.

Legendary Resistance (3/Day). If Burnadetta fails a saving throw, she can choose to succeed instead.

Actions

Multiattack. Burnadetta makes four Strike attacks.  One of the Strike attacks can be replaced by a Bite attack.

Strike. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 4) slashing damage, plus 5 (2d4) fire damage.

Bite. Melee Weapon Attack: +8 to hit, reach 5 ft., one creature. Hit: 7 (1d10 + 4) piercing damage, and the target must make a DC 17 Constitution saving throw, taking 18 (4d8) fire damage on a failed save, or half as much damage on a successful one. If the fire damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way.

Web (Recharge 5–6). Ranged Weapon Attack: +8 to hit, range 30/60 ft., one creature. Hit: The target is restrained by webbing. While restrained in Burnadetta's web, a creature takes 2 (1d4) fire damage at the start of each of its turns. As an action, the restrained target can make a DC 17 Strength check, bursting the webbing on a success. The webbing can also be attacked and destroyed (AC 13; hp 10; vulnerability to cold damage; immunity to fire, poison, and psychic damage).

Reactions

Burnadetta's Vendetta.  When Burnadetta reaches 0 HP, she explodes. All creatures within 10 ft of the Brood must make a DC 17 Dexterity saving throw, taking 18 (4d8) fire damage on a failed save, or half as much damage on a successful one.

Legendary Actions

Burnadetta can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. Burnadetta regains spent legendary actions at the start of its turn.

Detect. Burnadetta makes a Wisdom (Perception) check.

Strike Attack. Burnadetta makes two Strike attacks.

Bite Attack. Burnadetta makes a Bite attack.

Web Attack. Burnadetta makes a Web attack.

Description

Burnadetta possesses the magical ability to phase in and out of the Elemental Plane of Fire. It seems to appear out of nowhere and quickly vanishes after attacking. Its movement on the Elemental Plane before coming back to the Material Plane makes it seem like it can teleport.

Burnadetta can transport one creature with her while phasing, if the character is restrained in Web.

Burnadetta bears a resemblance to a giant spider and appears to be composed entirely of magma and flame.  Transparent plates on her body reveal a swirling mass of molten rock that forms her internal structure, while flames danced across the bulk of her abdomen and legs in random patterns. She has eight blazing eyes that are generally devoid of any expression.

Burnadetta stands approximately 4 feet (1.2 meters) tall, has a diameter of 8 feet (2.4 meters), and weighs about 600 lb (270 kg).

Lair and Lair Actions

Lair Actions

On initiative count 20 (losing initiative ties), Burnadetta takes a lair action to cause one of the following effects; Burnadetta can’t use the same effect two rounds in a row:

  • Magma erupts from a point on the ground Burnadetta can see within 120 feet of it, creating a 20-foot-high, 5-foot-radius geyser. Each creature in the geyser’s area must make a DC 15 Dexterity saving throw, taking 21 (6d6) fire damage on a failed save, or half as much damage on a successful one.
  • Burnadetta summons 4 (2d4) fire broods.
  • Volcanic gases form a cloud in a 20-foot-radius sphere centered on a point Burnadetta can see within 120 feet of it. The sphere spreads around corners, and its area is lightly obscured. It lasts until initiative count 20 on the next round. Each creature that starts its turn in the cloud must succeed on a DC 13 Constitution saving throw or be poisoned until the end of its turn. While poisoned in this way, a creature is incapacitated.

Monster Tags: Misc Creature

Habitat: Underdark

jbaysinger2

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