The Young Blue Dragon dnd 5e monster can have the below actions along with its attributes. If you need to know more about them you have to read them from the below lines.
Actions
Multiattack: Here the young blue dragon can make three attacks: such as one with its bite and another two with its claws.
Bite: By using this bite attack it can make melee weapon attack: +9 to hit, reach 10 ft., one target. Also hit: 16 (2d10 + 5) piercing damage + 5 (1d10) lightning damage.
Claw: By using this claw attack claw attack it can make Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Also hit: 12 (2d6 + 5) slashing damage.
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Lightning Breath (Recharge 5-6): The dragon able to exhale a lightning in the 60-foot line which is almost 5 feet wide. Each and every creature in that specific line should make a DC 16 dexterity saving throw and also taking 55 (10d10) lightning damage on a failed save, or even half as much damage on a successful one.
Attributes Of Young Blue Dragon Monster
| AC | 18 (Natural Armor) |
| Alignment | Lawful Evil |
| CHA | 17 |
| CON | 19 |
| Challenge Rating | 9 |
| DEX | 10 |
| HP | 152 (16d10+64) |
| INT | 14 |
| Immunities | Lightning |
| Languages | Common, Draconic |
| Passive Perception | 19 |
| Roll 0 | Bite 1d20 + 9 2d10+5+1d10 |
| Roll 1 | Claw 1d20 + 9 2d6+5 |
| Roll 2 | Lightning Breath 1d20 + 0 10d10 |
| STR | 21 |
| Saving Throws | Dex +4, Con +8, Wis +5, Cha +7 |
| Senses | Blindsight 30 Ft., Darkvision 120 Ft. |
| Size | Large |
| Skills | Perception +9, Stealth +4 |
| Speed | 40 ft., burrow 40 ft., fly 80 ft. |
| Type | dragon |
| WIS | 13 |