# Bile Lichen *Generic Hazard* Bile lichen is a toxic, green-yellow substance resembling vomit. It flourishes where extreme heat and cold mingle, such as at the steam-vent openings to Icewind Dale's Underdark. One patch of bile lichen covers a 5-foot square. If a patch of bile lichen is touched, it releases a cloud of spores that fills a 10-foot [Cube](/3-Mechanics/CLI/variant-rules/cube-area-of-effect-xphb.md) and dissipates after `1d4` hours. When a creature enters the cloud for the first time on a turn or starts its turn there, the creature makes a DC 14 Constitution saving throw, taking 11 (`2d10`) Poison damage and contracting [Lichen Plague](/3-Mechanics/CLI/diseases.md#Lichen%20Plague) on a failed save (see ""Magical Contagions"" later in this chapter). On a successful save, the creature takes half as much damage only. *Source: Forgotten Realms: Adventures in Faerûn p. 96*