Young Black Dragon

Large dragon, chaotic evil

Armor Class: 18 (natural armor)
Hit Points: 127 (15d10 + 45)
Speed: 40 ft., fly 80 ft., swim 40 ft.

STR: 19 (+4)
DEX: 14 (+2)
CON: 17 (+3)
INT: 12 (+1)
WIS: 11 (+0)
CHA: 15 (+2)

Saving Throws: Dex +5, Con +6, Wis +3, Cha +5
Skills: Perception +6, Stealth +5
Damage Immunities: acid
Senses: blindsight 30 ft., darkvision 120 ft., passive Perception 16
Languages: Common, Draconic
Challenge: 7 (2,900 XP)

Amphibious. The dragon can breathe air and water.

Actions

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

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 15 (2d10 + 4) piercing damage plus 4 (1d8) acid damage.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Acid Breath (Recharge 5-6). The dragon exhales acid in a 30-foot line that is 5 feet wide. Each creature in that line must make a DC 14 Dexterity saving throw, taking 49 (11d8) acid damage on a failed save, or half as much damage on a successful one.

Running this fight? Add the young black dragon to the initiative tracker: type its name and the AC, hit points and initiative bonus fill in, and the book button shows this stat block mid-fight.