Infernal

The Language of Hel and the Demons. It is almost unpronounceable by human tongues and has alien grammar fitting to beings with telepathy. It has its own, odd script, called the Infernal Runes, that twist and move of their own accord and are almost impossible to record without magic. Only a few magus’ and acolytes learn this tongue, though it is said to be studied by the priests of White Ash.