Those who turn from the light and find themselves entranced by the lure of necromantic power would heed well the tale of Ilken Lillett; A testament to the sacrifices which must be made to attain such power.
A spirit of judgement and punishment
Some people oppose change. Some people cause change. Jaith is the message of change to come.
Blood, biles black and yellow and phlegm, these are the four vital humours that govern our bodies. Understand them, and health is a simple matter.
St. Gray of Galen, Lectures
The sun has set upon the Kingdoms of Men, may night have mercy on us…
Opening Quote of the Book of the Black Rose
You find a patch of edible funghi. They taste well and all, no ill effects. UNLESS you consume some beverage, even 3 (three) days after eating it. Then you become really sick with pains, vomiting, all the fancy stuff. As a gift or good meal, it could be a cruel joke or to make sure the heroes spend their time focused on the mission. And the fine soup you had in the inn yesterday could have some in.
(Inspired through a real-world fungus. Was really used to cure alcoholism.)