Kosmine, Secretive

Family: Kosmima

Tiny fey (enrooted), any

Armor Class 15 (natural armor)
Hit Points 58 (13d4 + 26); Wound Threshold 15
Speed 30 ft., climb 30 ft.

4 (-3) 16 (+3) 14 (+2) 18 (+4) 14 (+2) 16 (+3)

Skills Arcana +7, Perception +5, Stealth +6
Damage Immunities poison
Condition Immunities charmed, frightened, poisoned
Senses darkvision 60 ft., tremorsense 30 ft., passive Perception 15
Languages Sylvan, Undercommon, and any one language
Challenge 5 (1,800 XP)


  • Innate Spellcasting. The secretive kosmine’s innate spellcasting ability is Charisma (spell save DC 14, +6 to hit with spell attacks). The secretive kosmine can innately cast the following spells like an 8th-level spellcaster, requiring no material components:
  • Labyrinthine Recall. The secretive kosmine can perfectly recall any path it has traveled.
  • Spider Climb. The secretive kosmine can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

(*) The objects appear to be moved by spider threads.

(**) This spell is triggered when a creature comes into contact with one of the secretive kosmine’s threads.

(****) This spell is not considered as corrupt for the secretive kosmine.


  • Multiattack. The secretive kosmine makes two bite attacks.
  • Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 1 piercing damage plus 10 (3d6) poison damage, and the target must succeed on a DC 13 Constitution saving throw or take a level of exhaustion.


The secretive kosmine owes its name to its interest in mysteries and magic. It is famed for devoting a lot of time to building concealed silk-covered hideouts and shelters, which can be found even in places of great danger, such as the surroundings of a Cankerous nest or an aboleth lair.

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