Abyssal

Abyssal, just like Infernal, also originates from Cruternum, but is spoken significantly less often, even by Helveri. It is said that this language was invented by Talshu and slowly drives anyone who speaks it insane. When you look at written Abyssal, it feels like you are being devoured by it and reading it is torture. Because it is such a horrible language, it has been banned in many cities and even learning it is a crime in most parts of Alkumeri. It is also rare to see written Abysal, as hardly anyone knows the language and many scripts have been destroyed.