Water Sprite. Water sprites are said to be able to breathe water or air, and in some cases, can fly. They are mostly harmless unless threatened. These creatures exist in mythology of various groups. Ancient Greeks knew water nymphs in several types such as naiads (or nyads), which guarded the fresh water bodies for the gods, while Slavic mythology knows them as vilas.
Yellow mold is a fungus that normally grows in dark and damp places. Several species of this mold exist, with some belonging in genera that are toxic or widely known to destroy wood. It is usually obvious when a building has a yellow mold infestation because the mold's color is often bright and difficult to miss.
Molds are a variety of spore-producing fungi that form in decaying food or in warm, moist places. These fungi usually have a woolly or furry texture. While most molds are harmless, there are at least three varieties of monstrous molds that pose a deadly threat to adventurers: brown, russet, and yellow mold. Brown Mold: Brown mold is found in damp subterranean areas, such as caverns and caves. It is light to golden brown in color.