Young Blue Dragon icon: a horned dragon’s head, in blue
Icon by Lorc, CC BY 3.0

Young Blue Dragon 5e stat block

Large dragon, lawful evil · CR 9 · 2024 stat block below

Armor Class
18 (natural armor)
Hit Points
152 (16d10+64)
Speed
40 ft., burrow 20 ft., fly 80 ft.
Challenge
9 (5,000 XP)
Proficiency bonus
+4
STRDEXCONINTWISCHA
21 (+5)10 (+0)19 (+4)14 (+2)13 (+1)17 (+3)
Saving throws
Dex +4, Con +8, Wis +5, Cha +7
Skills
Perception +9, Stealth +4
Damage immunities
lightning
Senses
blindsight 30 ft., darkvision 120 ft., passive Perception 19
Languages
Common, Draconic

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 a 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.

How many young blue dragons for a fight?

A young blue dragon is worth 5,000 XP. Using the 2024 encounter budgets (SRD 5.2), this is how many young blue dragons fit each difficulty for a party of four characters of the same level. A dash means even one would be over the budget.

Party levelLowModerateHigh
6th——1
7th—11
8th—11
9th112
10th112
11th123
12th123
13th234
14th234
15th246
16th347
17th359
18th4611
19th4812+
20th51012+

Budgets add up every monster’s XP, so you can swap some for other creatures of the same total. Try other party sizes and mixes in the encounter calculator.

How the young blue dragon compares at CR 9

Against the 7 other challenge 9 monsters in the SRD 5.1, the young blue dragon has more hit points than 3 of them, which makes it a little frailer than most at its CR. See every CR 9 monster.

StatisticYoung Blue DragonCR 9 average
Armor Class1816.6
Hit points152157
Best attack bonus+9+10

Young Blue Dragon 2024 stat block

The 2024 Monster Manual revised the young blue dragon, and the SRD 5.2 carries the new stat block. What changed:

Armor Class
18
Hit Points
152 (16d10 + 64)
Speed
40 ft., burrow 20 ft., fly 80 ft.
Challenge
9 (5,000 XP)
STRDEXCONINTWISCHA
21 (+5)10 (+0)19 (+4)14 (+2)13 (+1)17 (+3)
Damage immunities
lightning
Senses
darkvision 120 ft., blindsight 30 ft., passive Perception 19
Languages
Common, Draconic

Actions

Multiattack. The dragon makes three Rend attacks.

Rend. Melee Attack Roll: +9, reach 10 ft. Hit: 12 (2d6 + 5) Slashing damage plus 5 (1d10) Lightning damage.

Lightning Breath (Recharge 5–6). Dexterity Saving Throw: DC 16, each creature in a 60-foot-long, 5-footwide Line. Failure: 55 (10d10) Lightning damage. Success: Half damage.

Similar monsters

Browse: all CR 9 monsters · dragons · every monster