Ancient Black Dragon | Monsters
| Type | Dragon |
|---|---|
| Hit Points | 367 (21d20 + 147) |
| Armor Class | 22 |
| Challenge | 21, 33000 XP |
| Speed | 40 Ft., Fly 80 Ft., Swim 40 Ft. |
| Size | Gargantuan |
| Alignment | Chaotic Evil |
| Languages | Common, Draconic |
| Senses | Blindsight 60 Ft., Darkvision 120 Ft., Passive Perception 26 |
| Skills | Perception +16, Stealth +9 |
| Damage Immunities | Acid |
| Saving Throws | Dex +9, Con +14, Wis +9, Cha +11 |
| Strength | Dexterity | Constitution | Intelligence | Wisdom | Charisma |
|---|---|---|---|---|---|
| 27 | 14 | 25 | 16 | 15 | 19 |
Description
Amphibious. The dragon can breathe air and water.
Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.
Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.
Actions
Multiattack. The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack:+ 15 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 9 (2d8) acid damage.
Claw. Melee Weapon Attack: +15 to hit, reach 10 ft., one target. Hit: 15 (2d6 + 8) slashing damage.
Tail. Melee Weapon Attack: +15 to hit, reach 20 ft ., one target. Hit: 17 (2d8 + 8) bludgeoning damage.
Frightful Presence. Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 19 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 5-6). The dragon exhales acid in a 90-foot line that is 10 feet wide. Each creature in that line must make a DC 22 Dexterity saving throw, taking 67 (15d8) acid damage on a failed save, or half as much damage on a successful one.
Legendary Actions
Detect. The dragon makes a Wisdom (Perception) check.
Tail Attack. The dragon makes a tail attack.
Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 15 ft. of the dragon must succeed on a DC 23 Dexterity saving throw or take 15 (2d6 + 8) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.