The basket stinkhorn is a species of fungi with a peculiar shape and reproduction. Its insides smell of faeces and rotten meat, which attracts scavenger animals to come and spread its spores. However, the basket stinkhorn has a unique ability that doesn't manifest too often. When enough of are close by together, instead of feeding on decaying matter lying around, they will begin spreading and actively consuming biomatter in their way. These infestations of basket stinkhorns can be dozens of meters in length and the smell will be completely unbearable. After a few months, when an entire area is covered in basket stinkhorns, they will release their spores alongside a massive gas wave to push the spores as far and wide as possible. This gassing will last a couple of weeks, and anything caught up in it will surely asphyxiate from the god forsaken odour. Shortly after, the entire colony will perish, decomposing into a nutritious ooze.
Basket stinkhorns possess a few chemical compounds useful for less powerful alchemical serums.