Dexterity +8, Constitution +13, Wisdom +8, Charisma +13
Insight +8, Perception +14, Persuasion +13, Stealth +8
Blindsight 60 ft, Darkvision 120 ft
Common, Draconic
Fire
Traits
Amphibious
The Adult Gold Dragon can breathe air and water.
Legendary Resistance
If the Adult Gold Dragon fails a saving throw, it can choose to succeed instead.
Legendary Actions
Actions
Multiattack
The Adult Gold 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 10 ft. Hit: 19 (2d10 + 8) piercing damage.
Claw
+14 to hit, range 5 ft. Hit: 15 (2d6 + 8) slashing damage.
Change Shape
The Adult Gold 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 Adult Gold Dragon's choice). In a new form, the Adult Gold 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 Adult Gold Dragon uses one of the following breath weapons. Fire Breath. The Adult Gold Dragon exhales fire in a . Each creature in that area must make a saving throw, taking damage on a failed save, or half as much damage on a successful one. Weakening Breath. The Adult Gold Dragon exhales gas in a . Each creature in that area must succeed on a saving throw or have disadvantage on Strength-based attack rolls, Strength checks, and Strength saving throws for . A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
Tail
+14 to hit, range 15 ft. Hit: 17 (2d8 + 8) bludgeoning damage.
Frightful Presence
Each creature of the Adult Gold 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 Adult Gold Dragon's for the next 24 hours.
Legendary Actions
Detect
The Adult Gold Dragon makes a Wisdom (Perception) check.
Tail Attack
The Adult Gold Dragon makes a tail attack.
Wing Attack
The Adult Gold Dragon beats its wings. Each creature within of the Adult Gold Dragon must succeed on a saving throw or take damage and be knocked prone. The Adult Gold Dragon can then fly up to half its flying speed.