Mutable Realms has released some new information in their bestiary...they have presented us with a vicious creature known as the "Leecher."  It definately looks like something to have nightmares about :)  Here is an excerpt from the official site:

"A leecher is a parasitic, carnivorous plant creature which has evolved in a unique way to acquire sustenance. When an airborne leecher spore lodges itself in a living person's throat, there is a small chance that it will sprout and grow. Without swift treatment, the victim suffocates as the leecher threads its way throughout the host body's systems and assumes control of basic functions. Feeding off the corpse as it decays, the leecher uses it to move to a new location in search of a new host."

To see more, go to the official site at this link.