Timmask was a very rare, odorous fungus that grew in the Underdark.[1] It was known colloquially as "the devil's mushroom".[2]


Timmask was a squat toadstool that grew to a width and height of about two feet (60 centimeters) and occurred in small numbers, usually no more than four in a cluster. It had a beige-colored cap that was crossed with red and orange stripes. If it was heavily damaged or killed by uprooting, it spewed a cloud of spores out to a radius of 15 ft (4.6 m). All those within the cloud were poisoned for about a minute unless their constitution was sufficient to shake off the effects of the spores. Those who failed to resist acted like they were under the influence of a confusion spell until it wore off.[2]


Many creatures from the lower planes found timmask to be a delicacy, especially tanar'ri. The fungus could be used as a material component in the summoning of demons and/or offered as an enticement—both uses increased the likelihood of success. Timmask could also enhance necromancy spells, slightly increasing their effectiveness and doubling their duration (where applicable). A whole, intact mushroom sold for 5,000 to 8,000 gold pieces in the Underdark. Prices on the surface were twice as high. When ground into powder, a single timmask produced enough substance to be used in 21–30 spells. In this form, a sealed jar of timmask powder, enough for five spells, sold for 150 gp.[1]



  1. 1.0 1.1 Chris Perry (November 1994). “Fungi of the Underdark”. In Kim Mohan ed. Dragon #211 (TSR, Inc.), p. 26.
  2. 2.0 2.1 Christopher Perkins, Adam Lee, Richard Whitters (September 1, 2015). Out of the Abyss. Edited by Jeremy Crawford. (Wizards of the Coast), p. 23. ISBN 978-0-7869-6581-6.