The Dark Grimoire

The Dark Grimoire is a magical tome that Sar'khet took from his own library to give to Tulen Moratus for his servitude.

The Dark Grimoire
It is known that Sar'khet is the ancient dark god of Knowledge, Pacts, and Power. His realm is said to be a library with no limits. When Tulen requested a way to learn more spells to rule others, Sar'khet granted him an unscribed book from his library. Since then, Tulen has created many spells from the book. One example of this is Mortem, a spell that instantly and painlessly kills the target it hits.