diablerie

< /diˈɑ blə riz; French dya bləˈri/.

1. diabolic magic or art; sorcery; witchcraft.
2. the domain or realm of devils.
3. the lore of devils; demonology.
4. reckless mischief; deviltry.

noun

1. magic or witchcraft connected with devils
2. demonic lore or esoteric knowledge of devils
3. the domain of devils
4. devilry; mischief