Dexterity +6, Constitution +13, Wisdom +8, Charisma +10
History +9, Perception +14, Persuasion +10, Stealth +6
Blindsight 60 ft, Darkvision 120 ft
Common, Draconic
Fire
Traits
Legendary Resistance
If the Ancient Brass Dragon fails a saving throw, it can choose to succeed instead.
Legendary Actions
Actions
Multiattack
The Ancient Brass Dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
Bite
+14 to hit, range 15 ft. Hit: 19 (2d10 + 8) piercing damage.
Claw
+14 to hit, reach 10 ft. Hit: 15 (2d6 + 8) slashing damage.
Change Shape
The Ancient Brass Dragon magically polymorphs into a humanoid or beast that has a challenge rating no higher than its own, or back into its true form. It reverts to its true form if it dies. Any equipment it is wearing or carrying is absorbed or borne by the new form (the Ancient Brass Dragon's choice). In a new form, the Ancient Brass Dragon retains its alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities are otherwise replaced by those of the new form, except any class features or legendary actions of that form.
Breath Weapons
The Ancient Brass Dragon uses one of the following breath weapons. Fire Breath. The Ancient Brass Dragon exhales fire in an . Each creature in that line must make a saving throw, taking damage on a failed save, or half as much damage on a successful one. Sleep Breath. The Ancient Brass Dragon exhales sleep gas in a . Each creature in that area must succeed on a saving throw or fall unconscious for . This effect ends for a creature if the creature takes damage or someone uses an action to wake it.
Frightful Presence
Each creature of the Ancient Brass Dragon's choice that is within of the dragon and aware of it must succeed on a saving throw or become frightened for . 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 Ancient Brass Dragon's for the next 24 hours.
Tail
+14 to hit, range 15 ft. Hit: 17 (2d8 + 8) bludgeoning damage.
Legendary Actions
Detect
The Ancient Brass Dragon makes a Wisdom (Perception) check.
Tail Attack
The Ancient Brass Dragon makes a tail attack.
Wing Attack
The Ancient Brass Dragon beats its wings. Each creature within of the Ancient Brass Dragon must succeed on a saving throw or take damage and be knocked prone. The Ancient Brass Dragon can then fly up to half its flying speed.