Duplicate as Homebrew
Black Dragons SRD 5.2

Ancient Black Dragon

Gargantuan Dragon Chaotic Evil
Basic Stats
AC: 22
Initiative: +16 (+26)
Hit Points: 367 (21d20 + 147)
Speed: 40 ft., Fly 80 ft., Swim 40 ft.
CR: 21 (XP 33,000, or 41,000 in lair; PB +7)
Ability Scores
STR DEX CON INT WIS CHA
27
+8 		14
+2 		25
+7 		16
+3 		15
+2 		22
+6
Save: +8 Save: +9 Save: +7 Save: +3 Save: +9 Save: +6
Additional Stats
Skills:
Perception +16 Stealth +9
Senses:
Blindsight 60 ft., Darkvision 120 ft.; Passive Perception 26
Languages:
Common, Draconic
Immunities:
Acid

Traits

Amphibious The dragon can breathe air and water.
Legendary Resistance (4/Day, or 5/Day in Lair) If the dragon fails a saving throw, it can choose to succeed instead.

Actions

Multiattack The dragon makes three Rend attacks. It can replace one attack with a use of Spellcasting to cast Acid Arrow (level 4 version).
Rend Melee Attack Roll: +15, reach 15 ft. Hit: 17 (2d8 + 8) Slashing damage plus 9 (2d8) Acid damage.
Acid Breath (Recharge 5-6) Dexterity Saving Throw: DC 22, each creature in a 90-foot-long, 10-footwide Line.
Spellcasting The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 21, +13 to hit with spell attacks):
At Will: Acid Arrow (level 4 version), Detect Magic, Fear
1/Day Each: Create Undead, Speak with Dead, Vitriolic Sphere (level 5 version)

Legendary Actions

Preamble Legendary Action Uses: 3 (4 in Lair). Immediately after another creature's turn, the dragon can expend a use to take one of the following actions. The dragon regains all expended uses at the start of each of its turns.
Cloud of Insects Dexterity Saving Throw: DC 21, one creature the dragon can see within 120 feet.
Frightful Presence The dragon uses Spellcasting to cast Fear. The dragon can't take this action again until the start of its next turn.
Pounce The dragon moves up to half its Speed, and it makes one Rend attack.
Tags & Categories
Tags:
Black Dragons Chromatic
Environments:
None
Source Information
Source: SRD 5.2
This work includes material from the System Reference Document 5.2 (“SRD 5.2”) by Wizards of the Coast LLC, available at https://www.dndbeyond.com/srd. The SRD 5.2 is licensed under the Creative Commons Attribution 4.0 International License, available at https://creativecommons.org/licenses/by/4.0/legalcode
Duplicate as Homebrew