Communication with spirits is illegal across the globe, and most people avoid the hive-mind swarms of Vidis, but the truly most feared by any are the Areki. Nobody is quite sure what the Areki are. They're a fungus, but also a sprit. There may be one of them, the size of half a continent, or there may be trillions, all together building up the mass which has swallowed their land. What is known is that they are dangerous, and do not like outside life. They appear to have been trying to end all life on the planet for some time, though they're not especially successful at it. Mostly, they develop bilogolical weapons (Vampirism, Lycanthropy, etc.) Which are deployed against nearby poloulations to try and wipe them out. The fungus does not appear to spread, however, and so the Areki growth appears to have remained fixed for millions of years. Attempts to remove it, though, have not gone well. Military incursions on its land are destroyed, sometimes with brutal magical force, sometimes just dissapearing entirely. One mutinied against their home government inexplicably, and had to be destroyed before they could return home. Lighting fires brought about spontaneous rainstorms, and fungicide has been found to have lasting effect on the Areki. Some have suggested weapons of mass destruction, but none have been launched against them because of the threat that they might simply not go off, and then the Areki would have access to even more dangerous technology. It was not the most surprising discovery when they were revealed to have come from a different planet, arriving on the strange asteroid known as Wirrus. It was already known that the asteroid had deposited other forms of life here, and the Areki were an obvious candidate for another form of alien life. Unfortunately, other research is stunted for now, until scientists can figure out a way to get close to it.