Fungus, Shriekshroom

Family: Fungi

Large plant (shapechanger), neutral

Armor Class 13 (natural armor)
Hit Points 60 (8d10 + 16)
Speed 0 ft.

12 (+1) 10 (+0) 14 (+2) 5 (-3) 15 (+2) 1 (-5)

Skills Perception +4
Damage Resistances bludgeoning, piercing
Damage Immunities acid, poison
Condition Immunities poisoned
Senses tremorsense 60 ft., passive Perception 14
Languages Mycene
Proficiency Bonus +2
Challenge 1 (200 XP)


  • Distress Spores. When the shriekshroom takes damage, all other fungus creatures within 240 feet of it can sense its pain.
  • False Appearance. While the shriekshroom remains motionless, it is indistinguishable from a very large fungus.
  • Hive Mind. All fungi within 50 miles of are in constant communication. If one is aware of a particular danger, they all are. No fungus in a group is considered surprised unless all of them are.
  • Keen Hearing. The shriekshroom has advantage on Wisdom (Perception) checks that rely on hearing.


  • Bite (Enraged Form Only). Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 8 (3d4 + 1) piercing damage plus 7 (3d4) piercing damage


  • Shapechanger. When the shriekshroom takes damage, it uses it reaction action to polymorph into an enraged shriekshroom. Its statistics are the same in each form. It reverts to its placid form if it dies or after it stops shrieking.


  • Shriek. The shriekshroom emits a shriek audible within 300 feet of it. The shriekshroom continues to shriek until the disturbance moves out of range and for 1d4 of the shriekshroom’s turns afterward. While it’s shrieking, all creatures within that range have disadvantage on Wisdom (Perception) checks that rely on hearing.


This blue fungus has grumpy features on its stalk.

Shriekshrooms are an irritating but important part of mycene defenses. They are planted on the perimeter for fungal colonies as a sentry, and they react when creatures come near. For the most part, shriekshrooms are docile and will call out or hoot upon engaging with a living creature.

Things change for the worse if anyone should harm the siegeshroom. They then begin shrieking at the top of their lungs for all to hear until other mycenes intervene. They also become violent, changing color to purple and revealing a sharp maw they can use to bite. They will bite anything within reach, including other shriekshrooms and mycenes.

Section 15: Copyright Notice

5E Foes: Video Game Bestiary. Copyright 2022, Mal and Tal Enterprises, LLC; Author Michael J. Tresca.

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