Gargantuan Dragon (Adult Chromatic), Neutral Evil
AC 20    Initiative +11 (21)
HP 429 (26d20 + 156)
Speed 40 ft., Burrow 40 ft.
Mod Save
STR 30 +10 +17
DEX 4 −3 −3
CON 23 +6 +13
Mod Save
INT 15 +2 +2
WIS 14 +2 +2
CHA 16 +3 +3
Skills Athletics +17, Deception +10, Perception +16, Persuasion +10, Stealth +4, Survival +9
Immunities Acid; Exhaustion, Paralyzed
Senses Blindsight 60 ft., Darkvision 120 ft., Tremorsense 120 ft.; Passive Perception 26
Languages Common, Draconic
CR 23 (XP 50,000, or 75,000 in lair; PB +7)
Traits

Hold Breath. The dragon can hold its breath for up to 8 hours.

Legendary Resistance (4/Day, or 5/Day in Lair). If the dragon fails a saving throw, it can choose to succeed instead.

Actions

Multiattack. The dragon makes three Rend attacks. It can replace one attack with a use of Spellcasting to cast Dust Devil (level 6 version).

Rend. Melee Weapon Attack: +17, reach 15 ft. Hit: 19 (2d8 + 10) Slashing damage plus 7 (2d6) Acid damage.

Acid Breath (Recharge 5–6). Dexterity Saving Throw: DC 21, each creature in a 90-foot-long, 10-foot-wide Line. Failure: 73 (21d6) Acid damage. Success: Half damage.

Spellcasting. The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 18):

At Will: Create or Destroy Water, Dust Devil (level 6 version), Wall of Sand

1/Day: Disintegrate (level 7 version), Conjure Elemental (Earth only)

Bonus Actions

Deep Ambush. While burrowing within 10 feet of the surface, the brown dragon erupts (without spending movement) into a 20-foot square on the ground directly above it. Dexterity Saving Throw: DC 21, each creature within the area where the dragon emerges. Failure: The target is Restrained by rubble. A creature can use its action to free itself or another creature within its reach. Failure or Success: The target is pushed 5 feet to an unoccupied space of the brown dragon’s choice, and the area the dragon appears in is Difficult Terrain.

Legendary Actions

Legendary Action Uses: 3 (4 in Lair). Immediately after another creature’s turn, the dragon can expend a use to take one of the following actions. The dragon regains all expended uses at the start of each of its turns.

Sandstorm. The dragon uses Spellcasting to cast Wall of Sand. The dragon can’t take this action again until the start of its next turn.

Frightful Presence. The dragon uses Spellcasting to cast Fear. The dragon can’t take this action again until the start of its next turn.

Pounce. The dragon moves up to half its Speed, and it makes one Rend attack.

Lair and Lair Actions

The region containing an adult or ancient brown dragon’s lair is warped by its presence, creating the following effects: 

Shifting Terrain. The land within 6 miles of the lair takes twice as long as normal to traverse, since the sands are coarse and slippery, and ground that seems firm often hides holes or predators.

Dessication. Water sources within 1 mile of the lair are supernaturally dried up, and any spell that creates water except those cast by the dragon fail.

If the dragon dies or moves its lair, these effects end immediately.

Previous Versions

Name Date Modified Views Adds Version Actions
9/29/2025 4:58:25 AM
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0
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Coming Soon
9/29/2025 5:25:23 AM
11
1
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Habitat: SwampUnderdark

TheBooksDoctor

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