Ancient Copper Dragon
Gargantuan Dragon, chaotic good (CR 21)
Armor Class 21 natural armor
Hit Points 350 (20d20+140)
Speed 40 ft., fly 80 ft., climb 40 ft.
27 (+8)
12 (+1)
25 (+7)
20 (+5)
17 (+3)
19 (+4)
Skills deception 11, perception 17, stealth 8
Senses blindsight 60 ft., darkvision 120 ft., passive Perception 27
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.
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.
Breath Weapons (Recharge 5-6).
The dragon uses one of the following breath weapons.
Acid Breath. The dragon exhales acid in an 90-foot line that is 10 feet wide. Each creature in that line must make a DC 22 Dexterity saving throw, taking 63 (14d8) acid damage on a failed save, or half as much damage on a successful one.
Slowing Breath. The dragon exhales gas in a 90-foot cone. Each creature in that area must succeed on a DC 22 Constitution saving throw. On a failed save, the creature can't use reactions, its speed is halved, and it can't make more than one attack on its turn. In addition, the creature can use either an action or a bonus action on its turn, but not both. These effects last for 1 minute. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself with a successful save.
Change Shape.
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.
sizeGargantuan
typeDragon
groupCopper Dragon
alignmentchaotic good
strength_save
dexterity_save8
constitution_save14
intelligence_save
wisdom_save10
charisma_save11
perception17
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: Legendary Resistance (3/Day),desc: If the dragon fails a saving throw, it can choose to succeed instead.
spell_list
page_no295
document__license_urlhttp://open5e.com/legal
document__slugwotc-srd
document__title5e Core Rules
document__urlhttp://dnd.wizards.com/articles/features/systems-reference-document-srd
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5e Core Rules, page no. 295