Large dragon (gem), Lawful Neutral
| Armor Class | 17 (natural armor) |
|---|---|
| Hit Points | 157 (15d10 + 75) |
| Speed | 40 ft., burrow 20 ft., climb 40 ft., fly 80 ft. |
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 21 (+5) | 14 (+2) | 20 (+5) | 16 (+3) | 15 (+2) | 16 (+3) |
| Saving Throws | Cha +7, Con +9, Dex +6, Wis +6 |
|---|---|
| Skills | History +7, Perception +10, Persuasion +11, Stealth +6 |
| Damage Vulnerabilities | — |
| Damage Resistances | lightning; thunder |
| Damage Immunities | — |
| Condition Immunities | frightened |
| Senses | blindsight 30 ft., darkvision 120 ft., passive Perception 20 |
| Languages | Common, Draconic, telepathy 120 ft. |
| Challenge | 9 |
The dragon can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
The dragon can burrow through solid rock at half its burrowing speed and can leave a 10-foot-diameter tunnel in its wake.
The dragon makes one Bite attack and two Claw attacks.
Melee Attack Roll: +9 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) piercing damage plus 4 (1d8) thunder damage.
Melee Attack Roll: +9 to hit, reach 5 ft., one target. Hit: 8 (1d6 + 5) slashing damage.
The dragon exhales a pulse of high-pitched, nearly inaudible sound in a 30-foot cone. Each creature in that area must make a DC 17 Constitution saving throw. On a failed save, the creature takes 33 (6d10) thunder damage and is incapacitated until the end of its next turn. On a successful save, the creature takes half as much damage and isn't incapacitated.
The dragon casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 15):
1 each/day: dissonant whispers, hold person, meld into stone