- Armor Class: 22 (Natural Armor)
- Hit Points: 481 (26d20 + 208)
- Speed: 40 ft., burrow 40 ft., fly 80 ft.
- Saving Throws DEX +7, CON +15, WIS +10, CHA +12
- Skills Perception +17, Stealth +7
- Damage Immunities Lightning
- Senses Blindsight 60 ft., Darkvision 120 ft., Passive Perception 27
- Languages Common, Draconic
- Challenge 23 (50,000 XP)
- Proficiency Bonus +7
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: +16 to hit, reach 15 ft., one target. Hit: 20 (2d10 + 9) piercing damage plus 11 (2d10) lightning damage.
- Claw. Melee Weapon Attack: +16 to hit, reach 10 ft., one target. Hit: 16 (2d6 + 9) slashing damage.
- Tail. Melee Weapon Attack: +16 to hit, reach 20 ft., one target. Hit: 18 (2d8 + 9) bludgeoning damage.
Legendary Actions
- Detect: The dragon makes a Wisdom (Perception) check.
- Tail Attack: The dragon makes a tail attack.
| STR | DEX | CON | INT | WIS | CHA |
| 29 (+9) | 10 (+0) | 27 (+8) | 18 (+4) | 17 (+3) | 21 (+5) |
Attributes
| AC | 22 (Natural Armor) |
| Alignment | Lawful Evil |
| CHA | 21 |
| CON | 27 |
| Challenge Rating | 23 |
| DEX | 10 |
| HP | 481 (26d20+208) |
| INT | 18 |
| Immunities | Lightning |
| Languages | Common, Draconic |
| Passive Perception | 27 |
| Roll 0 | Bite 1d20 + 16 2d10+9+2d10 |
| Roll 1 | Claw 1d20 + 16 2d6+9 |
| Roll 2 | Tail 1d20 + 16 2d8+9 |
| Roll 3 | Lightning Breath 1d20 + 0 16d10 |
| STR | 29 |
| Saving Throws | Dex +7, Con +15, Wis +10, Cha +12 |
| Senses | Blindsight 60 Ft., Darkvision 120 Ft. |
| Size | Gargantuan |
| Skills | Perception +17, Stealth +7 |
| Speed | 40 ft., burrow 40 ft., fly 80 ft. |
| Type | dragon |
| WIS | 17 |
