Ancient Black Dragon
Gargantuan Dragon, chaotic evil (CR 21)Armor Class 22 natural armor
Hit Points 367 (21d20+147)
Speed 40 ft., swim 40 ft., fly 80 ft.
27 (+8)
14 (+2)
25 (+7)
16 (+3)
15 (+2)
19 (+4)
Skills perception 16, stealth 9
Senses blindsight 60 ft., darkvision 120 ft., passive Perception 26
Languages Common, Draconic
Challenge Rating 21
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.
sizeGargantuan
typeDragon
groupBlack Dragon
alignmentchaotic evil
strength_save
dexterity_save9
constitution_save14
intelligence_save
wisdom_save9
charisma_save11
perception16
damage_vulnerabilities
damage_resistances
damage_immunitiesacid
condition_immunities
cr21
reactions
legendary_descThe dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The dragon regains spent legendary actions at the start of its turn.
legendary_actionsname: Detect,desc: The dragon makes a Wisdom (Perception) check.,name: Tail Attack,desc: The dragon makes a tail attack.,name: Wing Attack (Costs 2 Actions),desc: 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.
special_abilitiesname: Amphibious,desc: The dragon can breathe air and water.,name: Legendary Resistance (3/Day),desc: If the dragon fails a saving throw, it can choose to succeed instead.
spell_list
page_no280
document__license_urlhttp://open5e.com/legal
document__slugwotc-srd
document__title5e Core Rules
document__urlhttp://dnd.wizards.com/articles/features/systems-reference-document-srd
Find the complete stats on: Open5e
5e Core Rules, page no. 280