Bone Dragon

Armor Class 19 (natural armor)

Hit Points 212 (17d12 + 102)

Speed 40 ft.

STR

25 (+7)

DEX

10 (+0)

CON

23 (+6)

INT

16 (+3)

WIS

15 (+2)

CHA

19 (+4)

Saving Throws DEX +5, CON +11, WIS +7, CHA +9

Skills +7, +12, +5

Damage Vulnerabilities Bludgeoning

Damage Immunities Necrotic

Senses 60 ft., 120 ft., Passive Perception 22

Languages Common, Draconic

Challenge 15 (13,000 XP)

Proficiency Bonus +5

Traits

Bones. The dragon has no need to breathe.

Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.

Death Embodied. After the dragon lands a hit, the attacked target must succeed a DC 10 CON save or take a bonus 2d8 Necrotic damage.

Actions

Multiattack. The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 18 (2d10 + 7) piercing damage.

Claw. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 14 (2d6 + 7) slashing damage.

Tail. Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 16 (2d8 + 7) bludgeoning damage.

Frightful Presence. Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 17 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours.

Breath Weapons (Recharge 5–6). The dragon uses one of the following breath weapons.

Death Breath. The dragon exhales necrotic energy in a 90- foot line that is 5 feet wide. Each creature in that line must make a DC 19 Dexterity saving throw, taking 66 (12d10) Necrotic damage on a failed save, or half as much damage on a successful one.

Repulsion Breath. The dragon exhales repulsion energy in a 30-foot cone. Each creature in that area must succeed on a DC 19 Strength saving throw. On a failed save, the creature is pushed 60 feet away from the dragon.

Legendary Actions

The dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The dragon regains spent legendary actions at the start of its turn.