Deep Dragon (5e)

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Fizban's Treasury of Dragons

Deep Dragon Overview   

  

[Deep dragons make] their lairs in the depths of the Underdark [which] gives them the ability to exhale magical spores that instill fear and scar the mind.

Deep dragons' black-and-gray hide is smooth [have] fungi … around the head and neck. Their wings are attached to their front legs and can fold in close to the body, allowing [them to] maneuver through relatively narrow tunnels.

Deep dragons often hoard secrets … seek out new insights and tricks … they are willing to bargain for knowledge they lack.

Deep Dragon's Lair

 Deep dragons [lair] in well-hidden caves or sunless beaches in the Underdark … covered in … mold and moss, … larger mushrooms and plants…

The challenge rating of a legendary deep dragon increases by 1 when it's encountered in its lair.

Lair Actions

 When fighting inside its lair, an deep dragon can use lair actions. On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row:

• Deep Torpor.
• Mossy Sludge.
• Toxic Spores.

Regional Effects

 The region surrounding a legendary deep dragon's lair is altered by the dragon's magic, creating one or more of the following effects:

• Preservation of Knowledge.
• Restless Sleep.
• Verdant Growth.

If the dragon dies, these effects fade over the course of 1d10 days.

List of Deep Dragons

(5 official and unofficial Deep Dragons)

Name	Type	Subtype	Size	HP	CR (XP)	Alignment	Habitat	Source
Deep Dragon Overview	Overview	Dragon, Deep Dragon					Underdark	Fizban's Treasury of Dragons
Adult Deep Dragon	Dragon	Deep Dragon	Huge	147	11 (7,200)	Neutral Evil	Shadowfell	Fizban's Treasury of Dragons
Ancient Deep Dragon	Dragon	Deep Dragon	Gargantuan	201	18 (20,000)	Neutral Evil	Shadowfell	Fizban's Treasury of Dragons
Deep Dragon Wyrmling	Dragon	Deep Dragon	Medium	27	1 (200)	Neutral Evil	Shadowfell	Fizban's Treasury of Dragons
Young Deep Dragon	Dragon	Deep Dragon	Large	93	5 (1,800)	Neutral Evil	Shadowfell	Fizban's Treasury of Dragons

Sources and Notes

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