Young Blue Dragon

Large dragon, lawful evil
Armor Class
18
Hit Points
16d10 + 64 (152)
Speed
walk
40 ft.
fly
80 ft.
burrow
40 ft.

STR
21 (+5)
DEX
10 (+0)
CON
19 (+4)
INT
14 (+2)
WIS
13 (+1)
CHA
17 (+3)

Saving Throws Cha +7, Con +8, Dex +4, Wis +5
Senses blindsight 30 ft., darkvision 120 ft., passive Perception 19
Languages Common, Draconic
Challenge 9 (5,000XP)

Damage Immunities
lightning

Actions

Multiattack

The dragon makes three attacks: one with its bite and two with its claws.

Bite

Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) piercing damage plus 5 (1d10) lightning damage.

Claw

Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage.

Lightning Breath (Recharge 5-6)

The dragon exhales lightning in an 60-foot line that is 5 feet wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 55 (10d10) lightning damage on a failed save, or half as much damage on a successful one.