This type of journal is well-known in the libraries for its teaching capabilities.

Wyvern skin has been tanned and used to bind sheets of parchment that have been enchanted with Illusory Script. When you write an entry into the journal, it automatically translates into Draconic. Likewise, if you write a Draconic passage in the journal, it will translate it into common.

 Once per day you may say the command word to wipe clear any words written within. 

Notes: Social, Utility