Einaan (EEE-in-on)

The elementals that were banished to Dalaein were higher elementals, those with a greater intellect and therefore a threat to the princes who banished them here. Despite their origins in different elemental planes, the elementals in Dalaein were more likely to encounter those of a different type and want to communicate. While the various elemental languages all stem from Primordial and generally a speaker of Ignan can understand a speaker of Auran and vice versa, the languages spoken inside the barrier morphed over time into a something else.
Einaan was the term used to describe the resulting language, and while deriving from Primordial and its dialects the new language was warped significantly. The isolation of the speakers and their shared anger at those that banished them was sufficient to change it into something that would be unintelligible to Primordial speakers.
Speaking Einaan became, and continues to be, a source of pride for those in Dalaein. Over the generations, as those hired to guard the gate became a society unto themselves within the barrier, they too began to understand and speak Einaan. When Brombek Bairn made his escape into the world at large it was inevitable that Einaan would come with him.
Such is the nature of languages that with the Fuga came a divergence in the language and the creation of a new dialect. Over the centuries, the dialect spoken inside the barrier changed very slowly, and became more and more fixed over time. To the contrary, the new dialect that evolved outside the barrier was relatively dynamic as it encountered other languages more frequently and the speakers were far less isolated. To this day, the version of the language spoken inside the barrier is referred to as Einaan and the dialect outside is called Einaani or Kruotian.
Over time, Einaani usage has faded somewhat and it is no longer the primary language spoken on Kruos, having been replaced by Common. But, many of the inhabitants here, especially the older ones, keep the language alive and pass it along to the next generation.