# Adult Blue Dragon

*Huge Dragon (Chromatic), Lawful Evil*

- **Armor Class:** 19
- **Hit Points:** 212 (17d12 + 102)
- **Speed:** 40 ft., Burrow 30 ft., Fly 80 ft.
- **Initiative**: +4 (14)

|STAT|SCORE|MOD|SAVE|
| --- | --- | --- | ---- |
| STR | 25 | +7 | +7 |
| DEX | 10 | +0 | +5 |
| CON | 23 | +6 | +6 |
| INT | 16 | +3 | +3 |
| WIS | 15 | +2 | +7 |
| CHA | 20 | +5 | +5 |

- **Immunities**: Lightning
- **Skills**: Perception +12, Stealth +5
- **Senses**: blindsight 60 ft., darkvision 120 ft.; Passive Perception 22
- **Languages**: Common, Draconic
- **CR** 16 (XP 15,000, or 18,000 in lair)

## Traits

***Legendary Resistance (3/Day, or 4/Day in Lair).*** If the dragon fails a saving throw, it can choose to succeed instead.


## Actions

***Multiattack.*** The dragon makes three Rend attacks. It can replace one attack with a use of Spellcasting to cast *Shatter*.

***Rend.*** *Melee Attack Roll:* +12, reach 10 ft. 16 (2d8 + 7) Slashing damage plus 5 (1d10) Lightning damage.

***Lightning Breath (Recharge 5-6).*** *Dexterity Saving Throw*: DC 19, each creature in a 90-foot-long, 5-foot-wide Line. *Failure:*  60 (11d10) Lightning damage. *Success:*  Half damage.

***Spellcasting.*** The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 18):

- **At Will:** *Detect Magic*, *Invisibility*, *Mage Hand*, *Shatter*
- **1e/Day Each:** *Scrying*, *Sending*

## Legendary Actions

***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*. The dragon can't take this action again until the start of its next turn.

***Tail Swipe.*** The dragon makes one Rend attack.

