Where does “necropower” come from?

necropower (English) comes from English necro, from English necromancy, from Middle English nigromancye, from Old French nigromancie, from Medieval Latin nigromantia, from Latin necromantīa, from Ancient Greek νεκρομαντεία, from Ancient Greek μαντεία — Creates collective nouns, which refer to groups...

necropower (English): Power over life and death, or over deadly activities and products such as assassination, weapons, the death penalty, etc