The Covens are also responsible for the extremely important service of regenerating dead warriors after realspace raids. In exchange, the [[Haemonculus]] responsible for the healing process will take a permanent portion from of the Dark Eldars soul who died from their patient for unknown purposes. The only requirement for a Haemonculus to be able to get a corpse (no matter how mangled or broken) back to life is time. The revival must happen within a day or so from the battle, which is a reason why Kabals make great efforts to return back quickly from the raid so that their deceased - barring occasional "accidents" for unlucky cadavers - will still have another chance.{{Fn|2}}