Oderian language
Oderian is a language spoken in Cassony. It is a western Indo-European language not specifically associated with any particular branch, but instead formed as an interlect.
It is thought the primary contributors of the language during its development were the early Germanic, Balto-Slavic and Celtic language groups. The language existed as a living and developing interlect between the 6th and 1st centuries BC, though it continued as a fossilized literary language from then onwards, acting as a lingua franca for the cultures situated near Pomerania in the Old World.