A scarlet heart mushroom was a large black mushroom that was covered with heart-shaped red spots. When a living creature approached, its heat caused the mushroom's red spots to burst, giving off a cloud of spores that caused blindness that could last for 2-8 days (or until cured with remove blindness or similar).[1]

Although they were immune to fire and sonic damage, acid or cold would destroy the mushrooms, while electricity caused them to become dormant for days at a time.[1]


  1. 1.0 1.1 Jason Bulmahn (September 2005). “Swamp Dangers”. Dungeon #126 (Paizo Publishing, LLC), p. 93.