User blog comment:27finnsprincess/Season Finale Predictions!/@comment-69.121.134.28-20120902004422/@comment-50.50.38.218-20120902040517

The Enchiridion contains much information. From how to kiss princesses to information on creatures whose tears heal any wound. The Enchiridion probably contains information that the Lich needs to regain his power and form. That is my guess anyway.

It would be interesting to see Marceline tangle with the Lich. She is powerful, but I don't think she is that powerful.