Sources
CR
Type
Size
Alignment
Movement

Deep Dragon Wyrmling

Medium Dragon, Neutral Evil

Armor Class 15 (natural armor)
Hit Points 27 (5d8 + 5)
Speed 30 ft., fly 60 ft., swim 30 ft., burrow 15 ft.
STR
14
+2
DEX
11
+0
CON
12
+1
INT
11
+0
WIS
12
+1
CHA
13
+1
Saving Throws DEX +2, CON +3, WIS +3, CHA +3
Skills Perception +3, Persuasion +3, Stealth +4
Damage Resistances poison, psychic
Condition Immunities Charmed, Frightened, Poisoned
Senses blindsight 10 ft., darkvision 90 ft., passive Perception 13
Languages Draconic
Challenge 1 (200 XP)

Actions

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:7 (1d10 + 2) piercing damage.

Nightmare Breath (Recharge 5–6). The dragon exhales a cloud of spores in a 15-foot cone. Each creature in that area must make a DC 11 Wisdom saving throw. On a failed save, the creature takes 5 (1d10) psychic damage, and it is frightened of the dragon for 1 minute. On a successful save, the creature takes half as much damage with no additional effects. A frightened creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Lore

Making their lairs in the depths of the Underdark, deep dragons are nightmarish cousins of chromatic dragons. The warped magical energy of their subterranean realm gives them the ability to exhale magical spores that instill fear and scar the mind.