PhycomidCesspools of the Depths

Phycomids live among the more common fungal varieties found throughout the Depths. Sprouting from crevices in walls, fissures in the floor, and the like – these lacework colonies are well camouflaged by the other cave flora. Only the tube-like protrusion slowly swaying in an imaginary breeze is the surest way to identify that a Phycomid may be stalking. Well that, and the unmistakable smell emanating from the fetid pools that encircle these patches. Their stringy mats grow only in the wettest caverns, relying upon copious amounts of moisture to survive. Unwittingly fed by creatures that frequent such underground watering holes – Phycomid present little risk to the seasoned spelunker – it is the creatures that they attract that are the true peril…

Read the entire ecology and get the full 5e stat block in Mortal Arrow’s supplemental booklet:

Warren of Vile Fungi: A Guide To Fungal Horrors, Hazards, and Curiosities found in the Depths