Entropy curse

An entropy curse is a dark spell which alters the probability of death.

In Series
Margaret Gwendolyn LeFay Dresden died giving birth to Harry due to being under the effects of an entropy curse.

In Death Masks, Harry and Ebenezar nearly escape an entropy curse.

In Blood Rites, Lord Raith and three assistants were behind the entopy curse that was targeting the women around Arturo Genosa.