Legendary Resistance (3/Day): If the Ancient Black Broodfiend fails a saving throw, it can choose to succeed instead.
Siege Monster: The Ancient Black Broodfiend deals double damage to objects and structures.
Amphibious: The creature can breathe underwater and move through water without impediment.
Web Sense: The Ancient Black Broodfiend knows the exact location of any creature in contact with a web within 60 feet of it.
Web Walker: The Ancient Black Broodfiend ignores movement restrictions caused by webbing.
Spider Climb: The Ancient Black Broodfiend can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check. This ability allows it to utilize the vertical surfaces within its lair to its advantage during combat.
Dragon's Roar: Once per day, the Ancient Black Broodfiend can unleash a terrifying roar that shakes the resolve of its enemies. All creatures of its choice within 60 feet that can hear the roar must succeed on a DC 23 Wisdom saving throw or be frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on a success.
Arachnid Telepathy: The Ancient Black Broodfiend can communicate telepathically with spiders and spider-like creatures within 120 feet, issuing commands and coordinating attacks.
Multiattack: The Ancient Black Broodfiend can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +17 to hit, reach 15 ft., one target. Hit: 41 (4d10 + 10) piercing damage plus 10 (3d8) acid damage.
Claw. Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 27 (3d6 + 10) slashing damage.
Tail. Melee Weapon Attack: +17 to hit, reach 20 ft., one target. Hit: 28 (4d8 + 10) bludgeoning damage.
Frightful Presence. Each creature of the broodfiend's choice that is within 120 feet of the broodfiend and aware of it must succeed on a DC 23 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours.
Acid Breath (Recharge 7–8). The broodfiend exhales acid in a 120-foot line that is 15 feet wide. Each creature in that line must make a DC 23 Dexterity saving throw, taking 108 (24d8) acid damage on a failed save, or half as much damage on a successful one.
Web (Recharge 5-6){"diceNotation":"1d6","rollType":"recharge","rollAction":"Web}[/rollable]: The Ancient Black Broodfiend excretes a thick, sticky web in a 60-foot cone. Each creature in that area must make a DC 23 Dexterity saving throw, or be restrained by the web. A creature can use its action to make a DC 25 Strength check, freeing itself or another creature within its reach on a success. The webs are flammable and can be attacked and destroyed (AC 18; hp 50; vulnerability to fire damage; immunity to bludgeoning, poison, and psychic damage).
The Ancient Black Broodfiend 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. The Ancient Black Broodfiend regains spent legendary actions at the start of its turn.
Detect: The Ancient Black Broodfiend makes a Wisdom (Perception) check.
Tail Attack: The Ancient Black Broodfiend makes a tail attack.
Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 15 feet of the dragon must succeed on a DC 25 Dexterity saving throw or take 25 (3d8+ 10) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.
Web Attack (Costs 2 Actions): The Ancient Black Broodfiend makes a web attack. This action recharges the Web ability if it is currently unavailable.
Description
The Ancient Black Broodfiend stands as a nightmarish fusion of dragon and arachnid, a grotesque spectacle that strikes fear into the hearts of even the bravest adventurers. Its gargantuan form, covered in sleek, obsidian-black scales, is reminiscent of a powerful dragon. The creature's wings, tattered and web-like, stretch wide, revealing veins of acidic green energy coursing through their membranes.
The head of the Ancient Black Broodfiend is draconic in shape, adorned with ominous horns and featuring piercing, malevolent eyes that glow with an unholy fusion of black and crimson. Its maw is lined with razor-sharp teeth stained with the corrosive venom it secretes. Long, sinuous neck and serpentine tail, both lined with armored ridges, give the creature an otherworldly and menacing presence.
However, the arachnid influence is unmistakable. The dragon's limbs are transformed into chitinous, spider-like appendages ending in wickedly sharp claws. From the creature's back, numerous spidery legs emerge, each terminating in dagger-like tips, granting the Ancient Black Broodfiend an unsettling agility and the ability to traverse difficult terrain with ease.
The creature's underbelly is covered in an intricate pattern of webbing, and as it moves, the air is filled with the faint sound of the silk strands vibrating. Its tail lashes behind, leaving a trail of webbing in its wake. The entire form of the Ancient Black Broodfiend exudes an aura of dark malevolence, a testament to the unholy union of ancient dragon and broodmother. The cavernous lair, filled with the acrid scent of acid and the skittering of countless spiders, only adds to the ominous atmosphere surrounding this formidable abomination.
Lair and Lair Actions
Lair of the Abyssal Arachnid Dominance:
Description: The Ancient Black Broodfiend's lair is a cavernous, subterranean chamber filled with the acrid stench of acid and the eerie glow of phosphorescent fungi. Massive webs span the expanse, creating a labyrinthine network that obscures vision and serves as both a trap and a nesting ground for swarms of spiders. The walls echo with the constant skittering of arachnids, and the air is heavy with an otherworldly energy. At the heart of the lair lies a pool of corrosive acid, its depths concealing the darkest secrets of the fusion between dragon and broodmother.
Lair Actions:
Web Surge: The lair magically pulses with arachnid energy. Thick strands of webbing shoot out in a 90-foot radius centered on the Ancient Black Broodfiend. Each creature in that area must make a DC 23 Dexterity saving throw or become restrained by the webs. A creature can use its action to make a DC 25 Strength check, freeing itself or another creature within its reach on a success. The webs created by this lair action are not flammable.
Acidic Mists: The lair exudes corrosive mists, filling the chamber. The area within 180 feet of the Ancient Black Broodfiend becomes lightly obscured for 1 minute. Creatures starting their turn or entering the mist must make a DC 18 Constitution saving throw, taking 10 (2d8) acid damage. acid damage on a failed save and half as much on a successful one.
Swarm Emergence: Swarms of venomous spiders emerge from hidden nests in the webs. Three swarms of spiders (use the statistics for swarms of insects, but replace their damage with poison damage) appear in unoccupied spaces within 60 feet of the Ancient Black Broodfiend. These swarms follow the commands of the broodfiend and attack creatures within their reach.
Regional Effects:
The region containing the lair is warped by the presence of the Ancient Black Broodfiend, which creates the following effects:
Web Pervasion: Within 1 mile of the lair, normal webs and spider colonies thrive, growing more extensive and resilient. Giant spiders and other arachnids become more aggressive, and their numbers increase.
Acidic Atmosphere: The air becomes charged with an acidic quality, causing metal objects to corrode over time. Any non-magical metal objects within 1 mile of the lair show signs of rust and decay within a week.
Dark Webbing Influence: The influence of the Ancient Black Broodfiend's dark webbing extends to nearby creatures. Spiders and spider-like creatures within 1 mile of the lair gain resistance to acid damage and advantage on saving throws against being restrained.
Adventurers who dare to challenge the Ancient Black Broodfiend within its lair must contend not only with the formidable creature but also with the treacherous terrain and the disturbingly symbiotic relationship between dragon and arachnid.
Comments