Dexterity +7, Constitution +10, Wisdom +6, Charisma +8
Perception +11, Stealth +7
Blindsight 60 ft, Darkvision 120 ft
Common, Draconic
Acid
Traits
Legendary Resistance
If the Adult Black Dragon fails a saving throw, it can choose to succeed instead.
Legendary Actions
Amphibious
The Adult Black Dragon can breathe air and water.
Actions
Multiattack
The Adult Black Dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
Bite
+11 to hit, range 10 ft. Hit: 17 (2d10 + 6) piercing damage.
Claw
+11 to hit, range 5 ft. Hit: 13 (2d6 + 6) slashing damage.
Tail
+11 to hit, range 15 ft. Hit: 15 (2d8 + 6) bludgeoning damage.
Frightful Presence
Each creature of the Adult Black 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 Black Dragon's for the next 24 hours.
Acid Breath
The Adult Black Dragon exhales acid in a . 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.
Legendary Actions
Detect
The Adult Black Dragon makes a Wisdom (Perception) check.
Wing Attack
The Adult Black Dragon beats its wings. Each creature within of the Adult Black Dragon must succeed on a saving throw or take damage and be knocked prone. The Adult Black Dragon can then fly up to half its flying speed.
Tail Attack
The Adult Black Dragon makes a tail attack.