Ancient Copper Dragon
AC 21, 367 HP gargantuan dragon with Legendary Resistance (4/Day). Acid Breath delivers 63 (14d8) acid in a 90-foot line on DEX DC 22 save for half. Multiattack: three Rend attacks...
Ancient Copper Dragon. Gargantuan dragon, chaotic good.
Languages: Common, Draconic
Traits: Legendary Resistance (4/Day, or 5/Day in Lair)
Gargantuan dragon · chaotic good
AC 21 · HP 367 · Speed 40 ft., fly 80 ft., swim 20 ft., climb 40 ft. · Initiative +15
| STR | DEX | CON | INT | WIS | CHA | |
|---|---|---|---|---|---|---|
| Score | 27 | 12 | 25 | 20 | 17 | 22 |
| Mod | +8 | +1 | +7 | +5 | +3 | +6 |
| Save | +8 | +8 | +7 | +5 | +10 | +6 |
Skills Deception +13, Perception +17, Stealth +8 · Senses blindsight 60 ft., darkvision 120 ft., passive Perception 27 · Challenge 21 (PB +7)
Immunities Acid
Traits
Legendary Resistance (4/Day, or 5/Day in Lair). If the dragon fails a saving throw, it can choose to succeed instead.
Actions
Acid Breath. Dexterity Saving Throw: DC 22, each creature in an 90-foot-long, 10-foot-wide Line. Failure: 63 (14d8) 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 5 version).
Rend. Melee Attack Roll: +15, reach 15 ft. 19 (2d10 + 8) Slashing damage plus 9 (2d8) Acid damage.
Slowing Breath. Constitution Saving Throw: DC 22, each creature in a 90-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 21): - **At Will:** Detect Magic, Mind Spike, Minor Illusion, Shapechange - **1/Day Each:** Greater Restoration, Major Image, Project Image