Dragon, Chromatic (Black) (CR 21/MR 8)

Hissing green acid drips from the fanged maw of this black-scaled, horned dragon.

Giant Mythic Ancient Black Dragon (CR 21/MR 8)
XP 409,600
Pathfinder Roleplaying Game Bestiary
CE Gargantuan dragon (mythic, water)
Init +0; Senses blindsense 60 ft., darkvision 120 ft., low-light vision, mistsightMA; Perception +30
Aura acrid stenchMA (10 ft., 2d6 acid plus sickened, DC 29) , frightful presence (300 ft., DC 25)


AC 44, touch 6, flat-footed 44 (+38 natural, –4 size)
hp 399 (22d12+256)
Fort +21, Ref +13, Will +18
Defensive Abilities DR 15/epic and magic; Immune acid, disease, dragon traits, nauseated, paralysis, poison, sickened, and sleep; SR 35


Speed 60 ft., fly 250 ft. (clumsy), swim 60 ft.
Melee bite +33 (4d6+21/19–20 plus 4d6 acid and disease), 2 claws +32 (4d6+14/19–20), 2 wings +30 (2d6+7), tail slap +30 (2d8+21), gore +32 (2d8+14)
Space 20 ft.; Reach 20 ft. (30 ft. with bite)
Special Attacks breath weapon (120-ft. line, 20d6 acid damage, Reflex half DC 31, usable every 1d4 rounds), caustic sputumMA, corrupt water, deadly spinesMA, fast swallowMA, jaws of decayMA, mythic power (8/day, 1d10), serpent servantsMA, swallow wholeMA (2d6+21 bludgeoning and 2d6 acid damage plus disease, AC 25, 39 hp)

Spell-Like Abilities (CL 22nd; concentration +26)
Constant—speak with animals (reptiles only)
At will—darkness (radius 100 feet), insect plague, plant growth
Sorcerer Spells Known (caster level 11th; concentration +19)
5th (5)—dominate person (DC 19), feeblemind (DC 19)
4th (8)—detect scrying, dimension door, moonstruck (DC 18)
3rd (8)—blink, clairaudience/clairvoyance, nondetection, stinking cloud (DC 17)
2nd (8)—bull’s strength, false life, invisibility, minor image (DC 16), mirror image
1st (8)—chill touch, mage armor, protection from chaos/evil/good/law, shield, shocking grasp
0 (at will)—dancing lights, detect magic, ghost sound (DC 14), mage hand, mending, message, prestidigitation, read magic, resistance


Str 39, Dex 10, Con 27, Int 18, Wis 21, Cha 18
Base Atk +22; CMB +40; CMD 50 (54 vs. trip)
Feats Ability Focus (breath weapon), Blinding Critical, Critical FocusMF, Devastating BreathMF, Improved Critical (bite), Improved Critical (claws), Improved Natural Attack (claws), Inescapable GraspMF, Jaws of DeathMF, Multiattack, Power Attack, Sickening Critical, Snatch, Weapon Focus (bite)
Skills Acrobatics +25 (+37 when jumping), Climb +20, Fly +11, Intimidate +29, Knowledge (dungeoneering) +20, Knowledge (nature) +20, Perception +30, Sense Motive +30, Spellcraft +17, Stealth +13 (+17 in water or swamps), Survival +30, Swim +30, Use Magic Device +29; Racial Modifiers +12 Acrobatics when jumping, +4 Stealth in water or swamps
Languages Aquan, Common, Draconic
SQ intestinal fortitudeMA, speak with reptiles, swamp stride, water breathing


Environment warm marshes
Organization solitary
Treasure triple

Special Abilities

Acid Pool (Su) A mythic ancient black dragon can use its breath weapon to create an acid pool as a standard action. This acid pool has a 50-foot radius, and when created all creatures within take 20d6 points of acid damage (DC 31 Reflex half). Any creature that starts its turn touching this pool takes damage, but can make a Reflex save for half. Each round, the total damage dice of the pool is halved until the result would be less than 1d6. The acid pool floats on water, and deals damage to anything on the surface.

Acrid Stench (Ex) A mythic ancient black dragon is surrounded by a miasma of caustic fumes. Creatures within 10 feet take 2d6 points of acid damage at the beginning of the dragon’s turn and must succeed at a DC 29 Fortitude save or become sickened for as long as they remain within 10 feet of the dragon and for 1d4 rounds thereafter. If a creature succeeds on this save, it is immune to the sickening effect of the dragon’s acrid stench for 1 hour. The save DC is Constitution-based.

Caustic Sputum (Su) A mythic ancient black dragon can expend one use of its mythic power as a free action when it uses its breath weapon to cause creatures failing their saving throw to become entangled in tangled clots of acrid mucus. Huge or smaller creatures are treated as if struck by a tanglefoot bag and if adjacent to a solid surface must succeed at a DC 15 Reflex save or become stuck fast to that surface, while creatures flying with wings must succeed at a DC 15 Reflex save or become unable to fly, falling to the ground. Unlike a tanglefoot bag, the caustic sputum works normally underwater. Each round a creature remains entangled by the sputum, it takes 2d6 points of acid damage and must succeed at a Fortitude save or become nauseated by the hideous stench of the deliquescent substance.

Corrupt Water (Sp) Once per day the dragon can befoul 10 cubic feet of still water within 300 feet, making unable to support life. Liquid magical items or liquids in a creature’s possession gain a Will save (DC 25) to avoid destruction. This is equivalent to a 1st-level spell.

Deadly Spines (Ex) A mythic ancient black dragon’s body, wings, and tail are covered in razor-sharp spines, allowing its wings and tail to deal both piercing and bludgeoning damage. In addition, its spiraling horns grant the dragon a gore attack as a secondary natural weapon. Creatures striking the dragon with a melee attack take 2d6 points of piercing damage unless using a reach weapon to attack. Creatures damaged by these spines also take 1 point of bleed damage, and as long as they are bleeding take a -2 penalty on saving throws against disease and effects that would cause them to become sickened or nauseated.

Disease (Su) Bite—Injury; save Fort DC 29; onset immediate; frequency 1 day; effect 1d3 Str, 1d3 Dex, and 1d3 Con damage; cure 2 consecutive saves.

Intestinal Fortitude (Ex) A mythic ancient black dragon is immune to disease, poison, and effects that would cause it to become nauseated or sickened.

Jaws of Decay (Su) A mythic ancient black dragon’s jaws inflict a virulent disease, and when a creature fails its saving throw against this disease the dragon may expend one use of its mythic power to make that disease highly contagious, as the mythic contagion spell. A creature that is swallowed whole must save every round to avoid contracting this disease. If the dragon confirms a critical hit with its bite or swallows a creature whole and the target fails its saving throw, their disease is automatically highly contagious without the need to expend mythic power.

Serpent Servants (Sp) A mythic ancient black dragon can summon 1d3 venomous snake swarms as a standard action. If the dragon expends one use of its mythic power as a free action when performing this summons, the swarms gain the agile mythic simple template and gain immunity to the dragon’s spell-like and supernatural abilities, including its breath weapon. This is equivalent to a 7th-level spell. If the dragon is struck by an attack while one of these swarms is adjacent to it, the dragon can expend one use of its mythic power as an immediate action to redirect that attack to target the swarm rather than itself. The swarm’s normal defenses apply, and the dragon takes no damage from the attack unless it affects an area.

Swamp Stride (Ex) The dragon can move through bogs and quicksand without penalty at its normal speed.

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