Less Dangerous Than Killing Spells That Kill You Instantly

 After achieving its job, an instant death spell will most likely fade away fast. These quick-fire enchantments, on the other hand, may come back to haunt the instigator with dire repercussions.

https://josecunat.com/news/voodoo_death_spells__definition__facts__and_myths.html

The repercussions of voodoo hexes can persist for years without diminishing, so choosing a spell with care is essential. Casters, on the other hand, can avoid any problems by following the right set of steps and casting a powerful, appropriate spell.