Huge dragon, unaligned

Armor Class: 20 (natural armor)

Hit Points: 374 (22d12 + 110) 22d12+110

Speed: 20 ft , swim: 40 ft

STR

25 +7

DEX

10 +0

CON

20 +5

INT

10 +0

WIS

12 +1

CHA

12 +1

Saving Throws: Dex +6, Con +11, Wis +7

Damage Resistances: fire

Senses: darkvision 120 ft., passive Perception 11

Languages: Aquan, Common, Draconic

Challenge Rating: 17 (18,000 XP)

Dragon Turtle by WotC

Actions

Multiattack. Bronzefume makes three attacks: one with its bite and two with its claws. She can make one tail attack in place of its two claw attacks.
Bite. Melee Weapon Attack: 1d20+13 to hit, reach 15 ft., one target. Hit: 26 (3d12 + 7) 3d12+7 piercing damage.
Claw. Melee Weapon Attack: 1d20+13 to hit, reach 10 ft., one target. Hit: 16 (2d8 + 7) 2d8+7 slashing damage.
Tail. Melee Weapon Attack: 1d20+13 to hit, reach 15 ft., one target. Hit: 26 (3d12 + 7) 3d12+7 bludgeoning damage. If the target is a creature, it must succeed on a DC 20 Strength saving throw or be pushed up to 10 feet away from the dragon turtle and knocked prone.
Steam Breath (Recharge 5–6). The dragon turtle exhales scalding steam in a 60-foot cone. Each creature in that area must make a DC 18 Constitution saving throw, taking 52 ( 15d6 ) fire damage on a failed save, or half as much damage on a successful one. Being underwater doesn't grant resistance against this damage.

Reactions

Bloodied Breath. When reduced to half her starting hit points, Bronzefume's breath weapon recharges, and she uses it as a reaction.
Ocean Coil. If Bronzefume takes fire damage (including damage dealt in the form of steam), as a free action, each enemy within 10 feet of her takes 10 damage of the triggering type and the dragon turtle has advantage on attacks against targets who took damage until the end of her next turn.

Legendary Actions

Flexible Legendary Actions. Bronzefume can take 1 legendary action per 4 living enemies she is engaged with, up to a maximum of 3 legendary actions vs 12 opponents, 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.

• Detect. Bronzefume makes a Wisdom (Perception) check.
• Tail Attack. Bronzefume makes a tail attack.
• Tidal Wave (Costs 2 Actions). Bronzefume churns the water around her. Each creature within 10 feet of the dragon must succeed on a DC 19 Dexterity saving throw or take 13 ( 2d6+6 ) bludgeoning damage and be knocked prone. The dragon can then swim up to half her swim speed.

Suggested Environments

Environments. Coastal, Underwater