E is for Eurynome

The gnome-sized Eurnome is one of the fiends that vies for the title of Prince of Death. He eschews the finery of some infernal nobility and wears a fox skin. This fur covers the constantly ooze sores that cover his body. He is often associated with death by disease and loves feasting on carrion. Intelligent ghouls and ghasts sometimes worship him. Those ravaged by disease and physicians seeking cures have been known to call upon him for knowledge of pestilence.

Eurynome
Armor Class: 6 [13]
Hit Dice: 8+4
Attack: Claw (1d6)
Special: See Below
Move: 12
HDE:  10, 1,100

Eyrynome is immune to nonmagical weapons. Anyone struck by the fiend must make a saving throw or contract a wasting disease. While this disease isn't fatal in itself, it prevents natural healing. Eurynome knows the secret to cure the illness. It is also possible to remove the affliction via magic.

Summoning/Bargaining Ritual Modifiers: Offering of  corpse (+1 per 100 lbs)

Potential Boons: Immunity to disease, knowledge of diseases cure, immunity to the parylysis of ghouls and ghasts

Potential Banes: occultist smells of carrion, occult contracts disease, occultist is unknown carrier of disease