Huge Dragon, Neutral
Armor Class 14 (natural armor)
Hit Points 212 (14d12 + 72)
Speed 20 ft., Fly 60 ft., Swim 40 ft.
STR
21 (+5)
DEX
16 (+3)
CON
23 (+6)
INT
12 (+1)
WIS
15 (+2)
CHA
12 (+1)
Saving Throws STR +10, CON +11, INT +6
Skills Intimidation +11, Perception +5
Damage Immunities Thunder
Condition Immunities Deafened
Senses Darkvision 60 ft., Passive Perception 15
Languages Draconic
Challenge 15 (13,000 XP)
Proficiency Bonus +5
Traits

Amphibious. The dragon can breathe air and water.

Expandable Mouth. As an action, the dragon can open its mouth to full width to use its Sonic Blast, or close it and flatten their body to swim.

Deaf. The dragon is nearly completely deaf, causing it to have advantage in saves using hearing, disadvantage in checks using hearing, and rendering it immune to the Death Song's call.

Prehensile Tail. If the dragon succeeds on a tail attack, it may force the target to make a DC 16 Strength saving throw or be grappled.

Actions

Bite. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 2d10 + 7 piercing damage.

Tail. Melee Weapon Attack: +12 to hit, reach 20 ft., one target. Hit: 3d8 + 7 bludgeoning damage.

Sonic Blast (5/Short Rest). The dragon produces a strong concussive sound in an 80ft line that is 10ft wide. Each creature within that line must make a DC 21 Constitution saving throw, taking 4d10 force damage and becoming stunned on a failed save, or half as much damage and not becoming stunned on a successful one.

Fire Breath (2/Short Rest). The dragon exhales fire in a 60-foot cone. Each creature in that area must make a DC 21 Dexterity saving throw, taking 9d6 fire damage on a failed save, or half as much damage on a successful one. After making the attack, the dragon must recharge and cannot make a breath weapon attack on its next turn. 

Description

Classified as members of the Tidal Class, Thunderdrums are large dragons that can thrive in land or sea. They are known for their massive mouths that generate sonic blasts strong enough to stun a human at close range. For this reason, Thunderdrums are believed to derive their power from Thor himself.

Because of their sonic blasts, Thunderdrums tend to be nearly deaf, making them immune to the Death Song’s call. They can fly at extremely high altitudes. Along with their incredible strength, they also possess a prehensile tail that is strong enough to carry heavy items. They can breathe fire too, but this takes a lot of energy out of them and is not their preferred method of attack.

What is also fascinating about the Thunderdrum is how it swims through the water. It has the ability to expel air from its lungs to flatten its body. This makes it easier for a Thunderdrum to skim along the surface of the water, or to dive deep down to hunt for food.

These dragons may be strong-willed and intimidating, but with a dedicated trainer that is just as stubborn, the Thunderdrum can become a loyal friend.

Previous Versions

Name Date Modified Views Adds Version Actions
1/12/2020 8:57:32 PM
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1/18/2020 2:28:25 AM
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starryprinxe

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