Adult Copper Dragon

Huge dragon, chaotic good

Armor Class 18 (natural armor)

Hit Points 184 (16d12+80)

Speed 40ft., climb 40ft., fly 80ft.

Saving Throws Dex +6, Con +10, Wis +7, Cha +8

Skills Deception +8, Perception +12, Stealth +6

Damage Immunities acid

Senses blindsight 60ft., darkvision 120ft., passive Perception 22

Languages Common, Draconic

Challenge 14 (11,500 XP)

Traits

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: +11 to hit, reach 10ft., one target.
Hit: 17 (2d10+6) piercing damage.

Claw

Melee Weapon Attack: +11 to hit, reach 5ft., one target.
Hit: 13 (2d6+6) slashing damage.

Tail

Melee Weapon Attack: +11 to hit, reach 15ft., one target.
Hit: 15 (2d8+6) bludgeoning damage.

Frightful Presence

Each creature of the dragon's choice that is within 120ft of the dragon and aware of it must succeed on a DC 16 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 60ft line that is 5ft wide. Each creature in that line must make a DC 18 Dexterity saving throw, taking 54 (12d8) acid damage on a failed save, or half as much damage on a successful one.

Slowing Breath. The dragon exhales gas in a 60ft cone. Each creature in that area must succeed on a DC 18 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.

Legendary Actions

The 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.

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 10ft of the dragon must succeed on a DC 19 Dexterity saving throw or take 13 (2d6+6) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.