This is a magical tome made by a long lost wizard of the Nagan Empire. Within this tome lives a spirit of wisdom, over the millenia people or history and the arcane has used this tome to learn dead languages. The tome grants the user the ability to learn any language they so wish. The spirit of the tome have one more lesson to give before getting released from its bond to this tome.
If you spend 48 hours over a period of 6 days or fewer studying the book's contents and practicing its guidelines, your may learn any language of your chosing.