Gargantuan Dragon, Chaotic Good
AC 21 Natural Armor    Initiative +2 (12)
HP 407 (22d20 + 176)
Speed 30 ft., Fly 120 ft., Swim 5 ft.
Mod Save
STR 29 +9 +9
DEX 14 +2 +9
CON 27 +8 +15
Mod Save
INT 18 +4 +4
WIS 21 +5 +5
CHA 23 +6 +13
Skills Insight +0, Perception +0, Persuasion +0
Vulnerabilities Force
Immunities Lightning, Thunder; Frightened, Grappled
Senses Blindsight 30, Darkvision 120; Passive Perception 10
Languages Auran, Common, Draconic, Elvish Common, Draconic, Auran, Elvish
CR 22 (XP 41,000; PB +7)
Traits

Living Storm

A creature that hits Brontyrax with a melee attack while within 10 feet of him takes 7 (2d6) lightning damage.

Skyroad Titan

Brontyrax can carry enormous loads while flying. Creatures and structures mounted securely upon him do not count against his normal carrying capacity unless the DM determines the load is truly extraordinary.

Actions

Multiattack

Brontyrax makes three attacks: one with his Bite and two with his Claws.

Bite. Melee Weapon Attack: +16 to hit, reach 15 ft., one target.
Hit: 20 (2d10 + 9) piercing damage plus 9 (2d8) lightning damage.

Claw. Melee Weapon Attack: +16 to hit, reach 10 ft., one target.
Hit: 16 (2d6 + 9) slashing damage.

Tail. Melee Weapon Attack: +16 to hit, reach 20 ft., one target.
Hit: 18 (2d8 + 9) bludgeoning damage.

Thunderhead Breath (Recharge 5–6)

Brontyrax exhales a catastrophic storm in a 120-foot cone.

Each creature in that area must make a DC 23 Dexterity saving throw.

On a failed save, a creature takes:

54 (12d8) lightning damage plus 27 (6d8) thunder damage

and is knocked prone.

On a success, it takes half damage and isn't knocked prone.

Objects and structures take double thunder damage.

Brontyrax generally angles this attack away from the Star.

Because unlike adventurers, he respects the furniture.

Thunderclap

Brontyrax beats his wings and releases a concussive blast.

Every other creature within 30 feet must succeed on a DC 23 Constitution saving throw or take 22 (4d10) thunder damage, be pushed 20 feet away, and become deafened until the end of its next turn.

Creatures that fail by 5 or more are also knocked prone.

Grab Yer Ass

Brontyrax attempts to seize one Large or smaller creature within 10 feet.

The target must succeed on a DC 24 Strength or Dexterity saving throw or become grappled.

While grappled, the target is restrained.

Brontyrax can then fly away carrying it.

Bonus Actions

Bonus Action Name. Enter the description for how bonus actions work for your monster here.

Reactions

Reaction Name. Enter the description for your action.

Legendary Actions

Brontyrax can take 3 legendary actions, choosing from the options below.

Detect

Brontyrax makes a Wisdom (Perception) check.

Tail Attack

Brontyrax makes one Tail attack.

Static Snap

One creature Brontyrax can see within 60 feet takes 10 (3d6) lightning damage unless it succeeds on a DC 23 Dexterity saving throw.

Get Off My Porch (Costs 2 Actions)

Brontyrax releases a thunderous roar.

Each creature of his choice within 30 feet must succeed on a DC 21 Wisdom saving throw or become frightened of him until the end of its next turn and be pushed 15 feet away.

Stormwing (Costs 2 Actions)

Brontyrax beats his wings.

Each creature within 15 feet must make a DC 24 Dexterity saving throw or take 16 (2d6 + 9) bludgeoning damage and fall prone.

Brontyrax can then fly up to half his flying speed.

Mythic Actions

Mythic-ish Phase: “Alright. Now I'm Mad.”

The first time Brontyrax falls below 150 hit points, lightning explodes through his scales.

Until the encounter ends:

  • his flying speed becomes 150 feet,
  • Living Storm deals 20 (6d6) lightning damage,
  • his Thunderhead Breath recharges on a 3–6,
  • and whenever he takes a legendary action, thunder rolls across the battlefield, and one creature within 120FT must succeed a DC 24 Dexterity saving throw or take 4d10 lightning damage (half damage for a successful save).

He also stops joking....That should terrify everyone.

Description

Whole caravans once traveled upon enormous platforms strapped across his back. He carried refugees through hurricanes, shattered invading fleets, and hunted creatures that preyed upon travelers between the floating realms.

Then the old age ended.

Brontyrax eventually curled himself beneath the foundations of the Radiant Vault of Dawnless Light and decided to sleep for “a little while.” That was several centuries ago. He never really left.

From deep beneath the Star, Brontyrax hears every argument, drunken confession, terrible story, musical performance, heckler, punchline, and bit of questionable advice.

Over time, he became a believer in the Redbough philosophy.

Lair and Lair Actions

Enter a description of your monster's lair here.

Lair Actions

On initiative count # (losing initiative ties), the [monster name] takes a lair action to cause one of the following effects; the [monster name] can’t use the same effect two rounds in a row:

  • Enter a description for a lair action.
  • Enter a description for a lair action.

Regional Effects

The region containing a legendary [monster name]’s lair is [enter the effect description], which creates one or more of the following effects:

  • Enter a regional effect description.
  • Enter a regional effect description.

If the [monster name] dies, these effects fade over the course of #d# days.

Habitat: Planar (Elemental Plane of Air)

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