Young Blue Dragon

Large / dragon / Lawful Evil / CR 9

Armor Class18
Hit Points152 (16d10 + 64)
Speed40 ft, burrow 40 ft, fly 80 ft
Challenge9
Proficiency+4
STR21+5
DEX10+0
CON19+4
INT14+2
WIS13+1
CHA17+3
Saving Throws

Dexterity +4, Constitution +8, Wisdom +5, Charisma +7

Skills

Perception +9, Stealth +4

Initiative

+0

Senses

Blindsight 30 ft, Darkvision 120 ft

Languages

Common, Draconic

Damage immunities

Lightning

Actions

Bite

action

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

Claw

action

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

Multiattack

action

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

Lightning Breath

action

Recharge 5–6. The young blue dragon exhales lightning in a 60-foot line (5 ft. 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.