D&D 5e monster · SRD 5.2
Ancient Blue Dragon
Gargantuan Dragon (Chromatic), Lawful Evil
- Armor Class
- 22
- Hit Points
- 481 (26d20+208)
- Speed
- 40 ft., fly 80 ft., burrow 40 ft.
- Initiative
- +14
- Challenge
- 23 (50000 XP)
- Proficiency Bonus
- +7
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 29+9 | 10+0 | 27+8 | 18+4 | 17+3 | 25+7 |
- Saving Throws:
- DEX +7, WIS +10
- Damage Immunities:
- lightning
- Senses:
- darkvision 120 ft., blindsight 60 ft., Passive Perception 27
Traits
Legendary Resistance (4/Day, or 5/Day in Lair). If the dragon fails a saving throw, it can choose to succeed instead.
Actions
Multiattack. The creature makes 3 attacks.
Rend. Melee Attack Roll: +16, reach 15 ft.. Hit: 2d8+9 slashing damage, plus 2d10 lightning damage.
Lightning Breath (Recharge 5–6). Dexterity Saving Throw: DC 23. Failure: 16d10 lightning damage; Success: half damage.
Spellcasting. spell save DC 22. At will: Detect Magic, Invisibility, Mage Hand, Shatter. 1/day: Scrying, Sending.
Legendary Actions
The creature can take 3 legendary actions, choosing from the options below — one at the end of another creature's turn. Spent actions are regained at the start of its turn.
Cloaked Flight. The dragon uses Spellcasting to cast Invisibility on itself, and it can fly up to half its Fly Speed. The dragon can't take this action again until the start of its next turn.
Sonic Boom. The dragon uses Spellcasting to cast Shatter (level 3 version). The dragon can't take this action again until the start of its next turn.
Tail Swipe. The dragon makes one Rend attack.