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Ancient Brass Dragon

Gargantuan · Dragon · CR 20 · Chaotic Good

Source. 5e 2014 Rules

20 (natural armor)

297 (17d20+119)

Ability Scores

Core attributes and their modifiers.

STR

DEX

CON

INT

WIS

CHA

Overview

Category Monsters

Subcategory Dragons, Metallic

Size Gargantuan

Type Dragon

Alignment Chaotic Good

XP 25000

Initiative Bonus +0

Movement

Walk 40 ft (12.2 m)

Fly 80 ft (24.4 m)

Swim 20 ft (6.1 m)

Climb 20 ft (6.1 m)

Burrow 40 ft (12.2 m)

Crawl 20 ft (6.1 m)

Senses

Darkvision 120 ft (36.6 m)

Blindsight 60 ft (18.3 m)

Passive Perception 24

Saving Throws

Dexterity +6 Constitution +13 Wisdom +8 Charisma +10

Skills

History +9 Perception +14 Persuasion +10 Stealth +6

Languages

Common, Draconic

Resistances & Immunities

Damage Immunities

fire

Environments

Desert

Traits

Legendary Resistance (3/Day)

If the dragon fails a saving throw, it can choose to succeed instead.

Actions

Bite

Cost 1

+14 to hit, reach 15 ft (4.6 m). Hit: 2d10 thunder damage.

Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage.

Breath Weapons

Recharge 5–6

The dragon uses one of the following breath weapons:

Fire Breath. The dragon exhales fire in an 90-foot line that is 10 feet wide. Each creature in that line must make a DC 21 Dexterity saving throw, taking 56 (16d6) fire damage on a failed save, or half as much damage on a successful one.
Sleep Breath. The dragon exhales sleep gas in a 90-foot cone. Each creature in that area must succeed on a DC 21 Constitution saving throw or fall unconscious for 10 minutes. This effect ends for a creature if the creature takes damage or someone uses an action to wake it.

Change Shape

Cost 1

The 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 dragon's choice).
In a new form, the 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.

Claw

Cost 1

+14 to hit, reach 10 ft (3 m). Hit: 2d6 thunder damage.

Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 15 (2d6 + 8) slashing damage.

Frightful Presence

Cost 1

Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 18 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.

Multiattack

Cost 1

The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Tail

Cost 1

+14 to hit, reach 20 ft (6.1 m). Hit: 2d8 thunder damage.

Melee Weapon Attack: +14 to hit, reach 20 ft., one target. Hit: 17 (2d8 + 8) bludgeoning damage.

Legendary Actions

Detect

Cost 1

The dragon makes a Wisdom (Perception) check.

Tail Attack

Cost 1

The dragon makes a tail attack.

Wing Attack

Cost 2

The dragon beats its wings. Each creature within 15 ft. of the dragon must succeed on a DC 22 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.

About Ancient Brass Dragon

Ancient Brass Dragon is a gargantuan dragon with a Challenge Rating of 20. It has a chaotic good alignment.

In combat, this creature maintains an Armor Class of 20 and possesses 297 hit points (derived from 17d20+119).

Ancient Brass Dragon has communication capabilities including Common, Draconic. This allows it to interact verbally with various creatures and characters.

GM Tips: Using Ancient Brass Dragon

3 tips available

When using Ancient Brass Dragon in your D&D 5e campaign, consider these tactical approaches:

Flight Control Strategy: Target flying creatures with spells like 'Hold Person', 'Web', or 'Grease' to ground them. Without flight restriction, they can escape melee range easily. Consider area denial spells below their flight altitude to force them into disadvantageous positions.
Burrowing Tactics: This creature can burrow at 40 ft. It can ambush from underground or escape combat by digging. Use 'Earthbind' or create difficult terrain to limit burrowing. Consider fighting in areas without soft ground.
Fire Damage Mitigation: This creature deals fire damage. Advise players to have fire resistance ready or use water-based tactics. Consider environmental fire hazards that could backfire on the creature.

Player Guide: Facing Ancient Brass Dragon

3 strategies available

When your party encounters this creature, keep these strategies in mind:

Counter Flight Advantage: This creature can fly! Use ranged attacks, reach weapons, or spells like 'Thunderwave' to push it away. Consider 'Gust of Wind' or 'Earthbind' to ground it. Melee characters need fly speed or flight magic to engage.
Burrowing Defense: This creature can burrow at 40 ft! It can ambush from underground. Use 'Earthbind', create difficult terrain, or fight on hard surfaces. 'Stone Shape' can seal burrows.
Fire Damage Protection: This creature deals fire damage! Get fire resistance from spells like 'Resistance' or potions. Avoid fighting near flammable objects. Water spells can counter fire attacks.

Encounter Building Calculator

Standard Party Encounter (4-5 characters):

This creature is a medium encounter for a party of 4 characters of level 20.

High-Level Solo Encounter:

This creature is too powerful for a single level-20 character. You need 2.0 character(s) at maximum level (20) to face this creature.

Experience Point Thresholds:

Medium: 42,000 XP
Hard: 63,000 XP
Deadly: 84,000 XP

Based on D&D 5e Dungeon Master's Guide encounter building guidelines. CR roughly equals party level for medium encounters.

Frequently Asked Questions

What is the challenge rating of Ancient Brass Dragon?: Ancient Brass Dragon has a Challenge Rating of 20, making it appropriate for parties of level 20.0.
What type of creature is Ancient Brass Dragon?: Ancient Brass Dragon is a Gargantuan Dragon, which affects how certain spells and abilities interact with it.
What languages does Ancient Brass Dragon speak?: Ancient Brass Dragon can communicate in Common, Draconic.