Ormu was a fungus that grew in the Underdark. It favored warm, moist areas such as steam tunnels and steam vents. Ormu gave off a soft green glow that provided dim illumination in a five foot (1.5 meter) radius. If harvested and dried, it yielded a phosphorescent powder that could be used to create a glowing pigment.[1]


  1. Christopher Perkins, Adam Lee, Richard Whitters (September 1, 2015). Out of the Abyss. In Jeremy Crawford ed. (Wizards of the Coast), p. 23. ISBN 978-0-7869-6581-6.