Adult Copper Dragon
Huge dragon, chaotic good
Armor Class 18 (natural armor)
Hit Points 184 (16d12 + 80)
Speed 40 ft., fly 80 ft., swim 20 ft., climb 40 ft.
str
23 (+6)
dex
12 (+1)
con
21 (+5)
int
18 (+4)
wis
15 (+2)
cha
18 (+4)
Saving Throws Dex +6, Wis +7
Skills Deception +9, Perception +12, Stealth +6
Damage Immunities acid
Senses blindsight 60 ft., darkvision 120 ft., passive Perception 22
Languages Common, Draconic
Challenge 14 (11,500 XP)
Legendary Resistance (3/Day, or 4/Day in Lair). If the dragon fails a saving throw, it can choose to succeed instead.
Actions
Acid Breath. Dexterity Saving Throw: DC 18, each creature in an 60-foot-long, 5-foot-wide Line. Failure: 54 (12d8) Acid damage. Success: Half damage.
Multiattack. The dragon makes three Rend attacks. It can replace one attack with a use of (A) Slowing Breath or (B) Spellcasting to cast Mind Spike (level 4 version).
Rend. Melee Attack Roll: +11, reach 10 ft. 17 (2d10 + 6) Slashing damage plus 4 (1d8) Acid damage.
Slowing Breath. Constitution Saving Throw: DC 18, each creature in a 60-foot Cone. Failure: The target can't take Reactions; its Speed is halved; and it can take either an action or a Bonus Action on its turn, not both. This effect lasts until the end of its next turn.
Spellcasting. The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 17): - **At Will:** Detect Magic, Mind Spike, Minor Illusion, Shapechange - **1/Day Each:** Greater Restoration, Major Image
Spellcasting (CHA, DC 17, +9 to hit)
At Will: Detect Magic, Mind Spike, Minor Illusion, Shapechange
1/Day Each: Greater Restoration, Major Image
Attack Summary
Legendary Actions
The adult copper 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 adult copper dragon regains spent legendary actions at the start of its turn.
Giggling Magic. Charisma Saving Throw: DC 17, one creature the dragon can see within 90 feet. Failure: 24 (7d6) Psychic damage. Until the end of its next turn, the target rolls 1d6 whenever it makes an ability check or attack roll and subtracts the number rolled from the D20 Test. Failure or Success: The dragon can't take this action again until the start of its next turn.
Mind Jolt. The dragon uses Spellcasting to cast Mind Spike (level 4 version). 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.