Large Plant, Unaligned
Armor Class 5 Natural armor
Hit Points 18 (4d8)
Speed
STR
3 (-4)
DEX
1 (-5)
CON
12 (+1)
INT
1 (-5)
WIS
3 (-4)
CHA
1 (-5)
Damage Vulnerabilities Fire
Damage Resistances Cold
Damage Immunities Poison
Condition Immunities Blinded, Charmed, Deafened, Frightened, Poisoned
Senses Blindsight 30 ft. (blind beyond this radius), Passive Perception 6
Languages --
Challenge 6 (2,300 XP)
Proficiency Bonus +3
Traits

False Appearance. While the cortinarius remains motionless, it appears like a normal but inexplicably large mushroom.

Actions

Multiattack. The fungus makes 1d4 Rotting Touch attacks.

Rotting Touch. Melee Weapon Attack: +2 to hit, reach 10 ft., one creature. Hit: 4 (1d8) necrotic damage.

Vine Whip. Melee Weapon Attack: Reach 30 ft., one creature. Hit: 3 (2d4) physical damage.

Bonus Actions

Spores. When agitated, the cortinarius releases spores that quickly form a new cortinarius from its large underground root system. Unless all fungi are killed, the original cortinarius will continue to multiply to a maximum of 5 including the original. Each new cortinarius has 3 less hit points than the original. 

Poisonous Fumes. If the original cortinarius reaches exactly 1 hit point, it will release its poisonous fumes that inflicts poison on everything in a 25 ft. radius unless they have poison immunity.

Description

The cortinarius is a large blue mushroom. It is an invasive species of mushroom that not only decomposes but consumes living creatures and ruins cave ecosystems. It releases bluish poisonous fumes occasionally, which often kills most cave dwelling entities.

Habitat: Underdark

kamibito

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