A Monograph on the Infernal Lesser Prince Morax the Profane

A while back I created a demon infested manor for my players to clear out and use as their new base of operations. Wanting a little more than murder-hobo smash and grab, I decided to try to tempt them. What else from a demonic intelligence that really wants to be free to cause chaos in the mortal realm? And how best to tempt a wizard desperate to hit 9th level? With magical (demonic) power of course! 

Sadly they sent the demon back to hell, and destroyed the Monograph.  

Well, they destroyed one copy of The Monograph. Others are out there. Maybe there's one in your game?

A Monograph on the Infernal Lesser Prince Morax the Profane
Composed by The Grand Archmage Idreforn, Court Wizard of the High King Aerokos

This tome radiates a faint necromantic/infernal magical aura when examined. The red leather of the covers is well worn, but the brass clasps shine as if freshly polished. The title on the spine glows dimly. Within, the pages are written both in an ancient common and magical script, depending on the section.

The first half of the volume covers who and what Prince Morax is, and his various evil deeds across both the world and as a general in the great wars in hell. It also describes the occasions the demon has been summoned and bent to the will of various demonologists, and how each time he’s been cast back into hell by the destruction of the crystal skull used to bind him. There is an extensive section detailing the various powers Morax is known to have used.

The second half of the volume concerns the ritual used to summon the demon, and the means to create the crystal skull that will bind him to the will of whoever holds the skull.  

The study of this book requires a magic-user or cleric to study it for at least a week before they can attempt to fully understand the magics within. During this week, 3 Int/Wis checks must be made.

Check 1 - The Lore
Failed Check - Deciphering the text requires an extra week.
Passed Check - The reader gains a comprehensive knowledge of Morax
Passed +5 - The reader has an intimate knowledge of Morax, and gains a +2 to the next check.
Passed +10 - as above, but the reader also picks up on the fact that there’s too much detailed info in the book.

Check 2 - The Ritual
Failed check - There is a flaw in the reader’s understanding. There is a 50/50 chance of the ritual simply failing or opening a portal to hell.
Passed check - the reader can successfully follow the instructions to summon Morax.
Passed +5 - As above, but the reader can also use the summoning circle to contain Morax.
Passed +10 - As above, and the reader knows that the summoning is a permanent effect (and how to reverse the ritual to send Morax back to hell)

Check 3 - The Binding
Failed Check - The reader has a (likely fatal) misunderstanding of how the binding skull works. Attempts to create it or utilize one already in existence suffer a -2 to their check.
Passed check - The reader understands how to create and use the binding skull
Passed +5 - the reader gains a +2 to their rolls to create & use the skull
Passed +10 - The reader understands that destruction of the skull frees Moxon, doesn’t banish him.

Controlling Molar with the skull
Bending a demon prince (even a lesser one) to one's will is a difficult task. Morax has a willpower score of 28. Anyone using the skull must add their Intelligence & Wisdom scores, plus half their level (rounded down). If the score is less than 28, Morax takes control of them as if under the effect of a Charm Person spell (no save). A tie score allows Morax a save for every task assigned to him. Beating his score increases the duration between saves to 1 day for every point his power score is beaten by.