Ghoul

Ghouls are a special type of undead, it is one that requires the body to have died, but the body transforms in a special way. Ghouls are a undead body that raises in places where terrible things have taken places, in short ghouls trigger with malicious and travesty energy hangs around, its why they always show up in already terrible situations like the aftermath of a battle, or large plagues, ghouls are the energies of that misery, that then call the soul back, bodies that are long dead cannot become ghouls naturally, as once the original soul is past the court of souls it can’t be called as easy anymore, ghouls still show some personality from the life of their soul, but they are cannibalistic, savage, and take on malicious personality traits from the energy that caused the resurrection in the first place, some old ghouls eventually start to lose the more savage elements of their nature, but they stay cannibalistic, some over time lose the necessarily malicious nature too, but they still require meat to survive, the ghoul body is cannibalistic as a sick pleasure as well as needed survival, they need the flesh of species like them, the closer to their original, the more nutricious and better it tastes, its why elves and the like are still really good to eat, and a high quality elf meat is better than human, but dragon or beef is not good anymore, animal ghouls don’t exists a lot based on the soul being needed, the ghouls that lose their evilness often die out as they stop eating and as a result their body starts rotting. As always arcane magic helps this, they found a way to 1. use spell points as sustenance too(by using it to prolong the curse keeping their undead body from rotting) 2. a spell to un-savage the mind of young ghouls 3. A spell to turn a corpse (overload it with malicious energy so you simulate what normally turns them naturally) (ghoul hold the ability to go into a type of hibernation when they haven’t eaten they then awaken when live creatures to eat come close)